Sunan Abi Dawud 331
سنن أبي داود#331SahihIbn 'Umar said:The Messenger of Allah (ﷺ) came from the privy. A man met him near Bir Jamal and saluted him. The Messenger of Allah (ﷺ) did not return the salutation until he came to a wall and placed his hands on the wall and wiped his face and hands; he then returned the man's salutation
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 Lighairihi
Zubair Ali ZaiIsnaad Hasan
In-book reference: 1:331