Sunan Abi Dawud 28
سنن أبي داود#28SahihNarrated A Man from the Companions: 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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 1:28