Sunan Ibn Majah
540
Sahih+3

It was narrated from Mu'awiyah bin Abu Sufyan that:He asked his sister Umm Habibah, the wife of the Prophet: "Did the Messenger of Allah ever offered prayer in a garment in which he had sexual intercourse?" She said: "Yes, if there was nothing noxious on it

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi