Sunan an Nasai
294
Sahih+2

It was narrated from Mu'awiyah bin Abi Sufyan that he asked Umm Habibah, the wife of the Prophet (ﷺ):"Did the Messenger of Allah (ﷺ) pray in a garment in which he had had intercourse?" She said: "Yes, so long as he saw no filth on it

SahihAbu Ghuddah
SahihAl-Albani