Sunan Abi Dawud Book 35, Hadith 33
The Prophet (ﷺ) came to Mecca and he had four plaits of hair.
I came to the Prophet (ﷺ) and I had long hair. When the Messenger of Allah (ﷺ) saw me, he said: Evil, evil! He said: I then returned and cut them off. I then came to him in the morning. He said (to me): I did not intend to do evil to you. This is much better.
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.