The Messenger of Allah ﷺ had relations with his wife, then in the morning he performed the ritual bath, prayed, and fasted that day.
حدثنا أبو القاسم بن أبي الزناد قال أخبرني أفلح عن القاسم
أن رسول الله ﷺ واقع أهله ثم أصبح فاغتسل وصلى وصام يومه ذلك
No references are available.
Its isnad is sahih. It has already appeared at 26070.