Combing the Hair (Kitab Al-Tarajjul)
كتاب الترجل
Chapter 8: Khaluq for Men
The Prophet (ﷺ) said: The angels do not come near three: the dead body of the unbeliever, one who smears himself with khaluq, and the one who is sexually defiled except that he performs ablution.
Chapter 10: Parting Of Hair
The people of the Book used to let their hair hand down, and the polytheists used to part their hair. The Messenger of Allah (ﷺ) like to confirm with the People of the Book in the matters about which he had received no command. Hence he Messenger of Allah (ﷺ) let his forelock hang down but afterwards he parted it.
When I parted the hair of the Messenger of Allah (ﷺ) I made a parting from the crow of his head and let his forelock hang between his eyes.
Chapter 15: What Has Been Reported About A Concession For That
I had a hanging lock of hair. My mother said to me: I shall not cut it, for the Messenger of Allah (ﷺ) used to stretch it our and hold it.
Chapter 16: Trimming The Moustache
The Messenger of Allah (ﷺ) commanded to clip the moustaches and grow the beard long.
We used to grow beard long except during the Hajj or 'Umrah.
Abu Dawud said: Istihdad means to shave the pubes.
Chapter 18: Dyeing Hair
The Prophet (ﷺ) as saying: Jews and Christians do not dye (their beards), so act differently from them.
The Prophet (ﷺ) said: The best things with which grey hair are changed are henna and katam.
He did not dye his hair, but Abu Bakr and 'Umar dyed their hair.
Chapter 20: What Has Been Reported About Black Dye
The Prophet (ﷺ) said: At the end of time there will be people who will use this black dye like the crops of doves who will not experience the fragrance of Paradise.
Chapter 8: Khaluq for Men
Abu Dawud said: His grandfathers were Zaid and Ziyad.
A man came to the Messenger of Allah (ﷺ) and he had the mark of yellowness (of saffron). The Prophet (peace be upon him rarely mentioned a thing which he disliked before a man. When he went away, he said: Would that you tell this man that he should wash this off him.
Chapter 9: What Has Been Reported About Hair
The Messenger of Allah (ﷺ) had hair which reached the lobes of his ears.
The hair of the Messenger of Allah (ﷺ) were up to the lobes of his ears.
Chapter 12: Regarding Men Braiding Their Hair
The Prophet (ﷺ) came to Mecca and he had four plaits of hair.
Chapter 14: A Boy With A Lock Of Hair
the Prophet (ﷺ) forbade qaza' which means that the head of a boy is shaved and a lock is left.
The Prophet (ﷺ) saw a boy with part of his head shaved and part left unshaven. He forbade them to do that, saying: Shave it all or leave it all.
Chapter 16: Trimming The Moustache
The Messenger of Allah (ﷺ) fixed forty days to shave the pubes, paring the nails, clipping the moustaches, and plucking the hair under the armpit.
Abu Dawud said: Ja'far b. Sulaiman transmitted it from Abu 'Imran on the authority of Anas. In this version he did not mention the Prophet (ﷺ). He said: Forty days were fixed for us. This is a more correct version.
Chapter 17: Plucking Grey Hairs
Do not pluck out grey hair. If any believer grows a grey hair in Islam, he will have light on the Day of Resurrection. (This is Sufyan's version). Yahya's version says: Allah will record on his behalf a good deed for it, and will blot out a sin for it.
Chapter 18: Dyeing Hair
Abu Quhafah was brought on the day of the conquest of Mecca with head and beard while like hyssop. The Messenger of Allah (ﷺ) said: Change this something, but avoid black.