The Prophet waited three days before visiting the family of Ja'far (Ja'far b. Abu Talib was killed at Mu'ta in the year 7 A.H). He said, “Do not weep for my brother after today,” and then said, “Call my brother’s children to me.” When we had been brought like a number of chickens he said, “Call me a barber,” and then ordered him to shave our heads.
Anas said he had a hanging lock of hair and his mother told him not to cut it, for God’s messenger used to stretch it out and hold it.
Abu Dawud transmitted it.
Umm 'Atiya al-Ansariya told that the Prophet said to a woman who used to perform circumcision (on girls) in Medina, “Do not cut severely, as that is better for a woman and more desirable to a husband.”
Abu Dawud transmitted it, saying this is a weak tradition one of whose transmitters is an unknown man.
Ibn al-Hanzaliya, one of the Prophet’s Companions, reported the Prophet as saying, “Khuraim al-Asadi would be a fine man were it not for the length of his hair which reaches the shoulders and the way he lets his lower garment hang down.” When Khuraim heard that he took a knife and cut his hair in line with his ears, and he raised his lower garment halfway up his legs.
Abu Dawud transmitted it.