(Imām Bukhārī narrates): Yahya bin Bukair narrated to us, he said: Laith narrated to us, from Ja'far bin Rabi'ah, from Al-A'raj, he said: I heard Umair, the freed slave of Hazrat Ibn Abbas (may Allāh be pleased with both of them), he said:
I and Abdullah bin Yasar, the freed slave of Hazrat Maimunah, wife of the Prophet ﷺ, came until we entered the house of Hazrat Abu Juhaim bin Al-Harith bin As-Simmah Al-Ansari (may Allāh be pleased with him). Hazrat Abu Juhaim said: The Prophet ﷺ came from the direction of Bi'r Jamal; a man met him and greeted him with salam. The Prophet ﷺ did not answer him until he came near a wall, and wiped his face and hands, then answered his salam.
Reference: Sahih Al Bukhari 337