Sunan Abi Dawud
Hadith #714
Narrated Aisha, Ummul Mu'minin: I used to sleep lying between the Messenger of Allah (ﷺ) and the qiblah. The Messenger of Allah (ﷺ) used to pray when I (was lying) in front of him. When he wanted to offer the witr prayer - added by the narrator Uthman - he pinched me - then the narrators are agreed - and said: Set aside