Ahmad bin Hanbal أحمد بن حنبل · Combing the Hair (Kitab Al-Tarajjul)

That he heard Mu'awiyah b. Abi Sufyan say during the Hajj when he was on the pulpit and took a lock of hair which was in the hand of the guard, saying: O people of Medina, where are your scholars ? I heard the Messenger of Allah (ﷺ) forbidding such a think as this and said: The children of Isra'il perished when their women practised it.

The woman who supplies fake hair and the one who asks for it, the woman who pulls out hair for other people and the woman who depilates herself, the woman who tattoos and the one who has it done when there is no disease to justify it have been cursed. Abu Dawud said: Wasilah means the woman who adds false hair to the hair of women. Mustawsilah means the one who asks for adding the hair to her hair. namisah…

The Prophet (ﷺ) gave the children of Ja'far three day' time to visit them. He then came to visit them, and said: Do not weep over my brother after this day. He said: Call to me the children of my brother. We were brought to him as if we were chicken. He said: Call a barber to me. He then ordered and our heads were shaved.

the Prophet (ﷺ) forbade qaza' which means that the head of a boy is shaved and a lock is left.