"The Messenger of Allah ﷺused to pray at night while I was lying down sleeping between him and the Qibla on his bed. When he wanted to pray witr he would wake me up and I would pray witr" (Using translation from Nasāʾī 759)  

«كَانَ رَسُولُ اللهِ ﷺ يُصَلِّي مِنَ اللَّيْلِ وَأنا رَاقِدَةٌ مُعْتَرِضَةٌ بَيْنَهُ وَبَيْنَ الْقِبْلَةِ عَلَى فِرَاشِهِ فَإِذَا أَرَادَ أَنْ يُوتِرَ أَيْقَظَنِي فَأَوْتَرْتُ»