甘草（二两） 麻黄（四两）
上二味，以水五升，先煮麻黄，去上沫，内甘草，煮取三升，温服一升，重覆汗出，不
汗再服，慎风寒。
厥而皮水者，蒲灰散主之。
【按】“厥而”二字，当是衍文。
【注】水在皮肤，浸淫日久，必然腐溃而出水也，当以蒲灰散敷之，以燥水也。
蒲灰散方（见消渴中）
水之为病，其脉沉小，属少阴。浮者为风，无水，虚胀者为气水，发其汗即已。脉
沉者，宜麻黄附子汤，浮者，宜杏子汤。
【按】为气水之“气”字，当是“风”字，若是“气”字，则无发汗之理，且通篇并无
气水之病。
【注】水之为病，其脉沉小，属少阴水也，今脉不沉小而浮，浮者为风，非少阴水也。若
无水虚胀者，为风水也，风水发其汗即已。风水脉沉者，宜麻黄附子汤汗之；脉浮者，宜
杏子汤汗之。
麻黄附子汤方
麻黄（三两） 甘草（二两） 附子（炮，一枚）
上三味，以水七升，先煮麻黄，去上沫，内诸药，煮取二升半，温服八合，日三服。
【集解】沈明宗曰∶麻黄附子汤，今人置之不讲，余特举而明之。麻黄、附子通阳开
窍，治水妙剂。今人惟用肾气汤、丸壅补其内，致阳气不宣，转补转壅，邪无出路，水
肿日增，咳血而死者，不知凡几矣。
杏子汤方
麻黄（四两） 杏仁（五十个） 甘草（炙，二两）
上水七升，先煮麻黄，减二升，去上沫，内诸药，煮取三升，去滓，温服一升，得汗
止服。
问曰∶黄汗之为病，身体肿，发热，汗出而渴，状如风水，汗沾衣，色正黄如柏汁，
脉自沉，何从得之？师曰∶以汗出入水中浴，水从汗孔入得之，宜黄 芍药桂枝苦酒汤主
之。
【注】此承黄汗互详其证，以明其治也。黄汗属湿，故身体肿；属风，故发热、汗出
而渴。状如风水者，谓面目浮肿也。汗沾衣，色正黄如柏汁，谓汗出粘黄也。脉自沉者，谓
从水得之也。究其得之之由，以汗出入冷水中浴，则 怆之寒内入，遏郁汗液于肌腠，从
土蒸化而出，故色黄也。宜黄 、桂枝解肌邪，以固卫气；白芍、苦酒止汗液，以摄营
气。营卫调和，其病已矣。
【集注】程林曰∶汗出则元府开，入水浴则 怆之水寒，藏留于腠理皮肤之中，则身
肿发热也。汗出沾衣如柏汁，则津液内竭，是以汗出而渴也。身肿虽状如风水，但风水之
脉不沉，汗不黄，口不渴，为异耳！
李升玺曰∶按汗出浴水，亦是偶举一端言之耳。大约黄汗由脾、胃湿久生热，积热
成黄，湿热交蒸而汗出矣。
魏荔彤曰∶黄汗者，汗出之色黄而身不黄，与发黄之证不同也。
尤怡曰∶黄汗之病，与风水相似。但风水脉浮，而黄汗脉沉；风水恶风，而黄汗不
恶风为异。其汗沾衣，色正黄如柏汁，则黄汗之所独也。风水为风气外合水气，黄汗为
水气外合热气，热被水遏，互郁交蒸，汗液则黄。用黄 、桂枝，芍药三味，行阳以益
阴，则荣气和而卫气周，盖欲使荣卫大行，而邪气毕达耳。
黄 芍药桂枝苦酒汤方
黄 （五两） 芍药（三两） 桂枝（三两）
上三味，以苦酒一升，水七升相和，煮取三升，温服一升。当心烦，服至六七日乃
解。若心烦不止者，以苦酒阻故也。
【方解】服后心烦者，以苦酒止汗太急也。盖汗出于心，急止之，则不得出，故心烦也，
至六七日乃解者，正复而邪自退也。
【集解】魏荔彤曰∶古人称醋为苦酒，非另有所谓苦酒也。美酒醯，即人家所制社醋，
即镇江红醋是也。又醋之劣者，即白酒醋，各处皆是，总以社醋入药。
尤怡曰∶苦酒阻者，欲行而未得遽行，久积药力乃自行耳，故曰∶服至六七日乃解。
黄汗之病，两胫自冷；假令发热，此属历节。食已汗出，又身常暮卧盗汗出者，此
劳气也。若汗出已，反发热者，久久其身必甲错；发热不止者，必生恶疮。若身重，汗
出已辄轻者，久久必身 ， 即胸中痛，又从腰以上必汗出，下无汗，腰髋弛痛，如有
物在皮中状，剧者不能食，身疼重，烦躁，小便不利，此为黄汗，桂枝加黄 汤主之。
【按】此承黄汗详申其证也。但文义未属，必是错简，不释。
桂枝加黄 汤方
桂枝 芍药（各二两） 甘草（二两） 生姜（三两） 大枣（十二枚） 黄 （二两）
上六味，以水八升，煮取三升，温服一升，须臾，饮热稀粥一升余，以助药力，温
覆取微汗，若不汗更服。
寸口脉浮而迟，浮脉则热，迟脉则潜，热潜相搏，名曰沉。跗阳脉浮而数，浮脉即热，
数脉即止，热止相搏，名曰伏。沉伏相搏，名曰水。沉则络脉虚，伏则小便难，虚难相搏，
水走皮肤，即为水矣。
【按】此条文义不属，不释。
寸口脉弦而紧，弦则卫气不行，即恶寒，水不沾流，走于肠间。
【按】此条必有脱简，不释。
问曰∶病者苦水，面目、身体、四肢皆肿，小便不利。脉之，不言水，反言胸中痛，
气上冲咽，状如炙肉，当微咳喘。审如师言，其脉何类？师曰∶寸口脉沉而紧，沉则为水，
紧则为寒；沉紧相搏，结在关元，始时当微，年盛不觉，阳衰之后，荣卫相干，阳损阴盛，
结寒微动，肾气上冲，咽喉塞噎，胁下急痛。医以为流饮，而大下之。气击不去，其病不
除；后重吐之，胃家虚烦，咽燥欲饮水，小便不利，水谷不化，面目手足浮肿。又与葶
苈丸下水，当时如小瘥，食饮过度，肿复如前，胸胁苦痛，象若奔豚，其水扬溢，则浮
咳喘逆。当先攻击冲气，令止，乃治咳，咳止其喘自瘥，先治新病，病当在后。
【按】此条文义不属，不释。
甘草（二两） 麻黄（四两）
以上两味药，用水五升，先煮麻黄，去掉水面上的浮沫，加入甘草，煮取三升药液，每次温服一升。服药后覆盖衣被使身体出汗，若不出汗则再服一次，注意避免风寒侵袭。
四肢厥冷且患有皮水病（水气停留于皮肤之间），用蒲灰散主治。
【按语】“厥而”二字，应当是衍文（多余的文字）。
【注释】水气停留在皮肤间，浸淫日久，必然导致皮肤腐烂溃破并流出水液，应当用蒲灰散外敷，以燥湿利水。
蒲灰散方（见消渴篇中）
水气病，脉象沉小，属于少阴病。脉象浮的，属于风邪所致；若无水气而虚胀的，属于气水病，发汗即可痊愈。脉象沉的，适宜用麻黄附子汤；脉象浮的，适宜用杏子汤。
【按语】为气水之“气”字，应当是“风”字，如果是“气”字，就没有发汗的道理，且全篇并无气水这种病证。
【注释】水气病，其脉象沉小，属于少阴水气病；现在脉象不沉小而浮，浮脉主风，不是少阴水气病。若无水气而虚胀的，属于风水病，发汗即可痊愈。风水病脉象沉的，适宜用麻黄附子汤发汗；脉象浮的，适宜用杏子汤发汗。
麻黄附子汤方
麻黄（三两） 甘草（二两） 附子（炮制，一枚）
以上三味药，用水七升，先煮麻黄，去掉浮沫，加入其他药物，煮取二升半药液，每次温服八合，每日三次服用。
【集解】沈明宗说：麻黄附子汤，如今的人不再探讨研究，我特意提出并阐明它。麻黄、附子能通阳开窍，是治疗水气的妙剂。如今的人只用肾气汤、丸药壅补体内，导致阳气不能宣通，越补越壅滞，邪气没有出路，水肿日益加重，咳血而死的人，不知有多少了。
杏子汤方
麻黄（四两） 杏仁（五十个） 甘草（炙，二两）
用水七升，先煮麻黄，减去二升水量，去掉浮沫，加入其他药物，煮取三升药液，去渣，温服一升，得到汗液即停止服药。
问：黄汗病（以汗出色黄为主要特征的疾病），身体浮肿，发热，出汗且口渴，症状类似风水病，汗水沾衣，颜色正黄如柏树汁液，脉象自沉，这是如何得的？老师说：因为出汗时进入水中沐浴，水从汗孔进入而得此病，适宜用黄芪芍药桂枝苦酒汤主治。
【注释】这是承接上文详细阐述黄汗的症状，以明确其治疗方法。黄汗属湿，所以身体浮肿；属风，所以发热、出汗且口渴。状如风水，是指面目浮肿。汗水沾衣，颜色正黄如柏树汁液，是指汗水粘腻发黄。脉象自沉，是指病因来自水湿。究其得病的原因，是因为出汗时进入冷水中沐浴，寒邪内入，遏制郁闭汗液于肌腠之间，随着土气蒸化而出，所以颜色发黄。适宜用黄芪、桂枝解除肌表邪气，以固护卫气；白芍、苦酒（醋）收敛止汗，以摄纳营气。营卫调和，病就好了。
【集注】程林说：出汗则玄府（汗孔）开放，入水沐浴则寒凉之水寒气，藏留于腠理皮肤之中，就会导致身体浮肿发热。汗水沾衣如柏树汁液，则津液内竭，所以出汗且口渴。身体浮肿虽然状如风水，但风水病的脉象不沉，汗水不黄，口不渴，这是不同之处！
李升玺说：按出汗后沐浴冷水，也是偶然举例说明一端罢了。大抵黄汗是由脾胃湿气久蕴生热，积热成黄，湿热交蒸而汗出。
魏荔彤说：黄汗，是汗出的颜色黄而身体不黄，与发黄（黄疸）的病证不同。
尤怡说：黄汗病，与风水相似。但风水脉浮，而黄汗脉沉；风水恶风，而黄汗不恶风，这是不同之处。其汗水沾衣，颜色正黄如柏树汁液，则是黄汗所独有的。风水是风气外合水气，黄汗是水气外合热气，热被水遏，互相郁结交蒸，汗液因此变黄。用黄芪、桂枝、芍药三味药，行阳以益阴，则营气和顺而卫气周流，大概是想要使营卫大力运行，而邪气全部排出。
黄芪芍药桂枝苦酒汤方
黄芪（五两） 芍药（三两） 桂枝（三两）
以上三味药，用苦酒（醋）一升，水七升混合，煮取三升药液，温服一升。服药后应当心烦，服至六七天才会缓解。如果心烦不止，是因为苦酒阻碍的缘故。
【方解】服药后心烦，是因为苦酒止汗太急。大概汗出于心，急于止汗，则汗不得出，所以心烦，到六七天才会缓解，这是因为正气恢复而邪气自然退去。
【集解】魏荔彤说：古人称醋为苦酒，并非另外有所谓的苦酒。美酒醯，就是人家所制的社醋，也就是镇江红醋。又劣等的醋，即白酒醋，各处都有，总之是用社醋入药。
尤怡说：苦酒阻，是想行而未得遽行，久积药力乃自行而已，所以说：服至六七天才会缓解。
黄汗病，两小腿自冷；假如发热，这属于历节病（关节疼痛剧烈如虎咬之病）。饭后出汗，又身体常在傍晚卧时盗汗出的，这属于劳气病。如果出汗后，反而发热的，久而久之身体必定出现肌肤甲错（皮肤干燥粗糙如鳞甲）；发热不止的，必定生恶疮。如果身体沉重，出汗后随即减轻的，久而久之必身体麻木不仁，甚至胸中痛，又从腰以上必出汗，腰以下无汗，腰髋弛缓疼痛，如有物在皮中状，严重的不能进食，身体疼重，烦躁，小便不利，这是黄汗，用桂枝加黄芪汤主治。
【按语】这是承接黄汗详细申述其症状。但文义不通顺，必定是错简（竹简顺序错乱），不解释。
桂枝加黄芪汤方
桂枝 芍药（各二两） 甘草（二两） 生姜（三两） 大枣（十二枚） 黄芪（二两）
以上六味药，用水八升，煮取三升药液，温服一升，片刻后，喝热稀粥一升多，以助药力，覆盖衣被取微汗，若不出汗再服。
寸口脉浮而迟，浮脉主热，迟脉主潜藏，热与潜相搏结，名叫沉。跗阳脉浮而数，浮脉即热，数脉主止（或主热盛），热与止相搏结，名叫伏。沉与伏相搏结，名叫水病。沉则络脉虚，伏则小便难，虚与难相搏结，水气走窜皮肤，即为水病。
【按语】此条文义不通顺，不解释。
寸口脉弦而紧，弦则卫气不行，即恶寒，水不沾流，走于肠间。
【按语】此条必有脱简（文字脱落），不解释。
问：病人苦于水气病，面目、身体、四肢皆肿，小便不利。诊脉时，不说水气病，反而说胸中痛，气上冲咽喉，感觉像有烤肉堵在那里，应当轻微咳嗽气喘。果真像老师所说，他的脉象是什么样的？老师说：寸口脉沉而紧，沉则为水，紧则为寒；沉紧相搏结，结在关元穴处，开始时应当轻微，年壮时不觉察，阳气衰退之后，营卫相互干扰，阳损阴盛，结聚的寒邪微微触动，肾气上冲，咽喉塞噎，胁下急痛。医生以为是流饮（水饮流动），而用峻下法攻下。气击不去，病不除；后来再次用吐法，胃家虚烦，咽燥想喝水，小便不利，水谷不化，面目手足浮肿。又给予葶苈丸下水，当时好像稍微好转，饮食过度，肿胀又回到从前，胸胁苦痛，象若奔豚（气从少腹上冲心胸），水气扬溢，则浮咳喘逆。应当先攻击冲气，令其停止，然后治咳，咳止其喘自然痊愈，先治新病，旧病当在后。
【按语】此条文义不通顺，不解释。
Gancao (2 liang) Mahuang (4 liang)
Take the above two herbs, add five sheng of water, first decoct Mahuang, remove the foam on the surface, then add Gancao, and decoct to obtain three sheng. Take one sheng warm after each dose. Cover with blankets to induce sweating; if no sweat occurs, take another dose. Avoid wind and cold.
For patients presenting with cold extremities and Pi Shui (Water Qi disease where water accumulates in the skin), Puhui San is the primary prescription.
[Note] The characters "Jue er" (cold extremities and) are likely interpolations.
[Commentary] When Water Qi remains in the skin for a long time, it inevitably causes rotting, ulceration, and weeping of fluid. It should be treated by applying Puhui San externally to dry the dampness.
Puhui San formula (see under Xiao Ke chapter).
In Water Qi diseases, if the pulse is deep and small, it belongs to Shaoyin. If the pulse is floating, it indicates Wind pathogen; if there is no water but distension due to deficiency, it is Qi Shui, which can be cured by inducing sweating. If the pulse is deep, Mahuang Fuzi Tang is suitable; if the pulse is floating, Xingzi Tang is suitable.
[Note] The character "Qi" in "Qi Shui" should be "Feng" (Wind). If it were "Qi", there would be no rationale for inducing sweating, and moreover, the entire text does not mention a disease called "Qi Shui".
[Commentary] In Water Qi diseases, a deep and small pulse indicates Shaoyin Water Qi. However, if the pulse is not deep and small but floating, it indicates Wind, not Shaoyin Water Qi. If there is no water but distension due to deficiency, it is Feng Shui (Wind Water), which can be cured by inducing sweating. For Feng Shui with a deep pulse, Mahuang Fuzi Tang should be used to induce sweating; for a floating pulse, Xingzi Tang should be used.
Mahuang Fuzi Tang Formula
Mahuang (3 liang) Gancao (2 liang) Fuzi (processed, one piece)
Take the above three herbs, add seven sheng of water, first decoct Mahuang, remove the foam, then add the other herbs, and decoct to obtain two and a half sheng. Take eight ge warm, three times a day.
[Collected Commentary] Shen Mingzong said: Mahuang Fuzi Tang is currently neglected by practitioners, so I specifically bring it up to clarify it. Mahuang and Fuzi unblock Yang and open orifices; it is an excellent remedy for treating water. Nowadays, people only use Shenqi Tang or pills to tonify internally, causing Yang Qi to become stagnant. The more they tonify, the more stagnation occurs, leaving no exit for the pathogen. Edema increases daily, leading to hemoptysis and death, yet countless such cases go unnoticed.
Xingzi Tang Formula
Mahuang (4 liang) Xingren (50 pieces) Gancao (honey-fried, 2 liang)
Add seven sheng of water, first decoct Mahuang until reduced by two sheng, remove the foam, then add the other herbs, and decoct to obtain three sheng. Strain the dregs, take one sheng warm. Stop administration once sweating occurs.
Question: Regarding Huang Han (Yellow Sweat disease), the patient presents with body swelling, fever, sweating, thirst, and symptoms resembling Feng Shui. The sweat stains clothes yellow like cypress juice, and the pulse is naturally deep. How is this contracted? The Master said: This is contracted when one enters water for bathing while sweating, allowing water to enter through the sweat pores. Huangqi Shaoyao Guizhi Kujiu Tang is indicated.
[Commentary] This follows up on the detailed discussion of Huang Han symptoms to clarify its treatment. Huang Han is attributed to Dampness, hence body swelling; it is attributed to Wind, hence fever, sweating, and thirst. "Resembling Feng Shui" refers to facial and ocular edema. "Sweat staining clothes, color bright yellow like cypress juice" refers to sticky, yellow sweat. "Pulse naturally deep" indicates the etiology involves water/dampness. Investigating the cause, bathing in cold water while sweating allows cold pathogens to enter internally, suppressing and stagnating sweat fluids in the muscle interstices. As they are steamed out by Earth Qi transformation, the color becomes yellow. Huangqi and Guizhi should be used to resolve exterior pathogens and secure Wei Qi (Defensive Qi); Baishao and Kujiu (vinegar) should be used to stop sweating and conserve Ying Qi (Nutritive Qi). When Ying and Wei harmonize, the disease resolves.
[Collected Notes] Cheng Lin said: Sweating opens the Yuan Fu (sweat pores); bathing in water introduces cold, which lodges in the couli (interstices) and skin, causing body swelling and fever. Sweat staining clothes like cypress juice depletes internal Jin Ye (Body Fluids), causing thirst and sweating. Although body swelling resembles Feng Shui, Feng Shui pulses are not deep, sweat is not yellow, and there is no thirst, which distinguishes them.
Li Shengxi said: Bathing in water while sweating is merely cited as one example. Generally, Huang Han arises from long-standing Spleen and Stomach Dampness generating Heat. Accumulated Heat turns yellow, and Damp-Heat steaming together causes sweating.
Wei Litong said: Huang Han refers to sweat that is yellow while the body itself is not yellow, differing from Fa Huang (Jaundice/Yellowing).
You Yi said: Huang Han disease is similar to Feng Shui. However, Feng Shui has a floating pulse, whereas Huang Han has a deep pulse; Feng Shui involves aversion to wind, whereas Huang Han does not. The sweat staining clothes bright yellow like cypress juice is unique to Huang Han. Feng Shui is Wind combining with Water Qi externally; Huang Han is Water Qi combining with Heat externally. Heat is suppressed by Water, leading to mutual stagnation and steaming, turning the sweat yellow. Using Huangqi, Guizhi, and Shaoyao promotes Yang to benefit Yin, harmonizing Ying Qi and circulating Wei Qi. The goal is to vigorously move Ying and Wei to expel all pathogens.
Huangqi Shaoyao Guizhi Kujiu Tang Formula
Huangqi (5 liang) Shaoyao (3 liang) Guizhi (3 liang)
Take the above three herbs, mix with one sheng of Kujiu (vinegar) and seven sheng of water, decoct to obtain three sheng. Take one sheng warm. One may experience mental restlessness (xin fan); relief typically comes after six or seven days. If mental restlessness persists, it is due to the obstructive nature of Kujiu.
[Formula Analysis] Mental restlessness after taking the medicine is because Kujiu stops sweating too abruptly. Since sweat originates from the Heart, stopping it abruptly prevents its release, causing mental restlessness. Relief after six or seven days indicates the restoration of Zheng Qi (Upright Qi) and the natural retreat of pathogens.
[Collected Commentary] Wei Litong said: Ancients referred to vinegar as Kujiu; there is no separate substance called Kujiu. Fine wine vinegar, also known as She Cu made by households, is essentially Zhenjiang Red Vinegar. Inferior vinegar, such as Baijiu vinegar, is available everywhere, but She Cu is generally used in prescriptions.
You Yi said: "Kujiu obstruction" means the action is desired but cannot happen immediately; it requires accumulated medicinal force over time to act spontaneously, hence "relief comes after six or seven days."
In Huang Han disease, the calves are naturally cold; if they are hot, it belongs to Li Jie (Joint Bi syndrome characterized by severe joint pain). Sweating after eating, along with night sweats occurring regularly in the evening while lying down, belongs to Lao Qi (Consumptive Qi disorder). If sweating is followed by fever, the skin will eventually become rough and scaly (Jia Cuo); if fever persists, malignant sores will develop. If the body feels heavy and lightens after sweating, prolonged illness will lead to numbness, potentially chest pain. Sweating will occur above the waist but not below; the lower back and hips will feel loose and painful, with a sensation of something trapped in the skin. In severe cases, appetite loss, body ache and heaviness, irritability, and dysuria occur. This is Huang Han, treated with Guizhi Jia Huangqi Tang.
[Note] This continues the detailed description of Huang Han symptoms. However, the textual coherence is lacking, suggesting bamboo slips were misplaced; thus, it is not explained.
Guizhi Jia Huangqi Tang Formula
Guizhi Shaoyao (2 liang each) Gancao (2 liang) Shengjiang (3 liang) Dazao (12 pieces) Huangqi (2 liang)
Take the above six herbs, add eight sheng of water, decoct to obtain three sheng. Take one sheng warm. Shortly after, drink more than one sheng of hot thin porridge to assist the medicinal power. Cover with blankets to induce mild sweating. If no sweat occurs, administer again.
The Cun Kou (inch position) pulse is floating and slow. Floating indicates Heat; slow indicates潜藏 (submergence/retention). The interaction of Heat and Submergence is named Chen (Deep). The Fu Yang pulse is floating and rapid. Floating indicates Heat; rapid indicates restriction/stopping. The interaction of Heat and Restriction is named Fu (Hidden). The interaction of Deep and Hidden is named Water Disease. Deep implies deficiency in collateral vessels; Hidden implies difficulty in urination. The interaction of Deficiency and Difficulty causes Water Qi to flow into the skin, resulting in Water Disease.
[Note] The meaning of this passage is unclear; it is not explained.
The Cun Kou pulse is wiry and tight. Wiry implies obstruction of Wei Qi movement, leading to aversion to cold. Water fails to circulate normally and flows into the intestines.
[Note] There must be missing text in this passage; it is not explained.
Question: A patient suffers from Water Disease, with swelling of the face, eyes, body, and limbs, and dysuria. Upon pulse diagnosis, instead of mentioning Water Disease, the physician mentions chest pain, Qi rushing up to the throat with a sensation of a lump of roasted meat, accompanied by slight cough and wheezing. If this is true as the Master said, what kind of pulse would it be? The Master said: The Cun Kou pulse is deep and tight. Deep indicates Water; tight indicates Cold. The interaction of Deep and Tight knots at the Guan Yuan point. Initially, it is subtle and unnoticed in youth. After Yang Qi declines, Ying and Wei interfere with each other. Yang damage leads to Yin excess. The knotted Cold moves slightly, causing Kidney Qi to rush upward, blocking the throat, and causing acute pain in the hypochondrium. Physicians mistook this for Liu Yin (flowing fluid/phlegm-fluid) and used harsh purgatives. The Qi attack remained unresolved, and the disease persisted. Later, emetics were used again, causing Stomach deficiency, vexation, dry throat, desire to drink water, dysuria, indigestion, and swelling of the face, eyes, hands, and feet. Then Tingli Wan was given to drain water. The condition seemed slightly better initially, but overeating caused the swelling to return. Chest and hypochondriac distress ensued, resembling Ben Tun (Running Piglet Qi). Water overflowed, causing floating cough and wheezing. One should first attack the Rushing Qi to stop it, then treat the cough. Once the cough stops, the wheezing will heal naturally. Treat new conditions first; old conditions follow later.
[Note] The meaning of this passage is unclear; it is not explained.