《外台》∶崔氏初剃儿头良日∶寅、丑日吉，丁、未日凶。
《集验方》∶京畿初剃头不择日，皆于盈月日剃之。盖风俗所尚。前此产妇未得出房，盈月即与儿俱出，以
谓胎发秽恶，多触神灶，小儿不安，故此日必剃头而出。剃头于温暖避风处剃之。剃后须以生油、杏仁、腻粉
头上捺之，以避风邪。其后小儿剃头，亦宜用此。
《外台》∶崔氏禳谢法∶
轩辕者，干神，天丞相使者。风伯犯之，令儿惊吐，可取梨枝六寸埋生处，大吉。
雷公者，震神，太阴使者。天马犯之，令儿烦闷腹满，解之以三屠家肉为饼，于产处谢之，大吉。
咸池者，坎神，天之雨师使者。犯之令儿啼不止，用羊脯酒于生处谢之，吉。
丰隆者，艮神，天之东明使者，天仆也。害气犯之，令儿乍寒乍热，大腹，以白鱼二枚于生处谢之。又大
豆一升投井中亦大吉。
招摇者，坤神，天上使者。犯之令儿惊，空嚼不止，以酒饼生处谢之，即愈。
天候者，巽神，天一执法使者。犯之令儿腹胀，张眼，以白鱼二枚于生处谢之，吉。
吴时者，离神，天一将军游击使者。犯之令儿惊，腹痛，用马脯五寸于生处谢之，吉。又以白鱼五枚并枣
饼埋其生处，吉。
大时者，兑神，小时北斗使者。犯之令儿腹胀下痢，解之以酒脯于生处谢之。又以大豆一升投井中，吉。
犯月杀者，令儿惊啼。用丹雄鸡血于生处谢之，吉。
犯白虎者，用稻米一升，鸡子三枚于生处谢之，吉。黍米亦得。
犯大夫者，用羊肝三枚及稻米一升于生处谢之，吉。又用鸡羝、羊脾、黍米亦得。
犯日游者，令儿口噤，色变欲死者。用三屠家肉，麦饭于生处谢之，吉。
According to the *Waitai Mi Yao* (Essential Prescriptions Worth a Thousand Gold for Emergencies): Cui Shi's auspicious days for an infant's first haircut: The Yin and Chou days are auspicious, while the Ding and Wei days are inauspicious.
According to the *Ji Yan Fang* (Collected Proven Prescriptions): In the capital region, no specific day is selected for the first haircut; it is always performed on the day of the full month (one month after birth). This is likely due to local customs. Prior to this, the mother had not yet left her confinement room; upon reaching the full month, she would leave together with the infant. It was believed that lanugo (fetal hair) was impure and could offend the deity of the stove, causing the infant to be uneasy. Therefore, on this day, the head must be shaved before going out. The haircut should be performed in a warm place sheltered from the wind. After shaving, raw oil, apricot kernels, and calomel should be applied to the head to ward off wind-pathogens. This method is also suitable for subsequent haircuts of the infant.
According to the *Waitai Mi Yao*: Cui Shi's methods of propitiation and expiation (rituals to avert disaster):
Xuanyuan Star is the Gan Spirit and the envoy of the Heavenly Chancellor. If offended by the Wind Lord, it causes infantile fright and vomiting. One may take a six-cun long pear branch and bury it at the birthplace; this is highly auspicious.
Leigong Star is the Zhen Spirit and the envoy of Great Yin. If offended by Tianma, it causes infantile restlessness, stuffiness, and abdominal distension. Resolve this by making cakes from meat of three butchers and performing expiation rituals at the birthplace; this is highly auspicious.
Xianchi Star is the Kan Spirit and the envoy of the Heavenly Rain Master. If offended, it causes incessant crying. Use mutton jerky and wine to perform expiation rituals at the birthplace; this is auspicious.
Fenglong Star is the Gen Spirit, the envoy of Dongming of Heaven, and also the Heavenly Servant. If offended by harmful qi, it causes alternating chills and fever and large abdominal distension. Perform expiation rituals at the birthplace using two white fish. Additionally, throwing one sheng of soybeans into a well is also highly auspicious.
Zhaoyao Star is the Kun Spirit and the envoy of Heaven. If offended, it causes infantile fright and incessant empty chewing. Perform expiation rituals at the birthplace using wine cakes; recovery will follow.
Tianhou Star is the Xun Spirit and the envoy of Tianyi Zhifa. If offended, it causes abdominal distension and staring eyes. Perform expiation rituals at the birthplace using two white fish; this is auspicious.
Wushi Star is the Li Spirit and the envoy of Tianyi Jiangjun Youji. If offended, it causes infantile fright and abdominal pain. Use five cun of horse jerky to perform expiation rituals at the birthplace; this is auspicious. Additionally, burying five white fish and date cakes at the birthplace is auspicious.
Dashí Star is the Dui Spirit and the envoy of Xiaoshi Beidou. If offended, it causes abdominal distension and dysentery. Resolve this by using wine and meat jerky to perform expiation rituals at the birthplace. Additionally, throwing one sheng of soybeans into a well is auspicious.
Offending the Yue Sha (Monthly Killer) causes infantile fright and crying. Use the blood of a red rooster to perform expiation rituals at the birthplace; this is auspicious.
Offending Baihu (White Tiger) requires using one sheng of rice and three eggs to perform expiation rituals at the birthplace; this is auspicious. Shumi (broomcorn millet) is also acceptable.
Offending Dafu (Great Official) requires using three sheep livers and one sheng of rice to perform expiation rituals at the birthplace; this is auspicious. Using chicken ram meat, sheep spleen, and shumi is also acceptable.
Offending Riyou (Daily Traveler) causes infantile trismus (lockjaw), color changes, and a condition resembling death. Use meat from three butchers and wheat flour meals to perform expiation rituals at the birthplace; this is auspicious.