Jabir said: The Messenger of Allah ﷺ forbade that a man should lie placing (and according to Qutaibah’s version: “should raise”) one of his legs over the other. Qutaibah’s version adds: When he was lying on his back.
Hadith ReferenceSunan Abi Dawud / General Behavior (Kitab Al-Adab) / Hadith: 4865
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم (2099)