Humayd al-Himyari said: I met a man (Companion of the Prophet) who remained in the company of the Prophet (ﷺ) just as AbuHurayrah remained in his company. He then added: The Messenger of Allah (ﷺ) forbade that anyone amongst us should comb (his hair) every day or urinate in the place where he takes a bath.
Sunan Abi Dawud Book 1, Hadith 28
← Previous Hadith The Messenger of Allah (ﷺ) said: No one of you should make water in his bath and then wash himself there (after urination).

The version of Ahmad has: Then performs ablution there, for evil thoughts come from it.

Sunan Abi Dawud Book 1, Hadith 27 Next Hadith → The Prophet (ﷺ) prohibited to urinate in a hole.

Qatadah (a narrator) was asked about the reason for the disapproval of urinating in a hole. He replied: It is said that these (holes) are the habitats of the jinn.

Sunan Abi Dawud Book 1, Hadith 29