Hadith 4:717
Hafs narrated to us, from Hisham and Ash'ath, from Ibn Sirin, who said: Abdullah said: "If the caller to prayer (mu'adhdhin) gave the call while I was between the legs of my wife, I would perform ghusl (ritual bath), then I would fast."
حدثنا حفص عن هشام وأشعث عن بن سيرين قال قال عبد الله لو أذن المؤذن وأنا بين رجلي امرأتي لاغتسلت ثم صمت