Chapter 1: Purification (Kitab Al-Taharah)
Narrated Abu Sa' id al-Khudri: I heard the Messenger of Allah (ﷺ) say: When two persons go together for relieving themselves uncovering their private parts and talking together, Allah, the Great and Majestic, becomes wrathful at this (action). Abu Dawud said: This tradition has been narrated only by 'Ikrimah b. 'Ammar.
Sunan Abi Dawud 15