مناسك حج - مكارم شيرازى، ناصر - الصفحة ١٩٧ - Rulings of Wuquf in Arafat and Mash'ar
Article ٣١٩- It is obligatory to perform shaving or shortening the hair of the head in Mena and if a person does not perform that deliberately or because of ignorance or forgetfulness, it is obligatory for him/ her to return to Mena and perform this duty. And if he/ she cannot return or it causes severe hardness for him/ her, he/ she should perform that anywhere that he/ she is; and it is obligatory precaution to send his/ her hair to Mena and it is Mustahab to burry the hair in Mena.
Article ٣٢٠- It is not permitted for those who has not performed Taqsir yet and are still Muhrim to shave the head of another person or shorten his/ her hair, but they should perform Taqsir first and then they can do it for the others.
Article ٣٢١- Person who knows that if he/ she shaves his/ her head, he/ she might get injured, it is precaution to cut a part of the hair first and then shave the head.