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." (IT)
English reference (IT): Vol. 1, Book 1, Hadith 540 (IT)
Arabic reference (IT): Book 1, Hadith 583 (IT)