Ibn Umar used to take a brief nap at Bat-ha, and he mentioned that the Messenger of Allah ﷺ used to do the same.
حدثنا روح حدثنا حماد عن حميد
أن ابن عمر كان يهجع هجعة بالبطحاء وذكر أن رسول الله ﷺ فعل ذلك
Its isnad is sahih. It will come at greater length at 5756. This is the valley of Batha of Makkah.