'A'isha reported that the Messenger of Allah ﷺ used to offer prayer at night while she lay in front of him, and when the Witr prayer was yet to be observed, he would awaken her and she observed Witr.
أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يُصَلِّي صَلاَتَهُ بِاللَّيْلِ وَهِيَ مُعْتَرِضَةٌ بَيْنَ يَدَيْهِ فَإِذَا بَقِيَ الْوِتْرُ أَيْقَظَهَا فَأَوْتَرَتْ
The Apostle of Allah ﷺ said his whole prayer (Tahajjud prayer) during the night while I lay between him and the Qibla. When he intended to say Witr (prayer) he awakened me and I too said witr (prayer).
كَانَ النَّبِيُّ ﷺ يُصَلِّي صَلاَتَهُ مِنَ اللَّيْلِ كُلَّهَا وَأَنَا مُعْتَرِضَةٌ بَيْنَهُ وَبَيْنَ الْقِبْلَةِ فَإِذَا أَرَادَ أَنْ يُوتِرَ أَيْقَظَنِي فَأَوْتَرْتُ
The Messenger of Allah ﷺ used to pray at night and she (‘A’ishah) would lie between him and the qiblah, sleeping on the bed on which he would sleep. When he wanted to offer the witr prayer, he awakened her and she offered the witr prayer.
أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يُصَلِّي صَلاَتَهُ مِنَ اللَّيْلِ وَهِيَ مُعْتَرِضَةٌ بَيْنَهُ وَبَيْنَ الْقِبْلَةِ رَاقِدَةً عَلَى الْفِرَاشِ الَّذِي يَرْقُدُ عَلَيْهِ حَتَّى إِذَا أَرَادَ أَنْ يُوتِرَ أَيْقَظَهَا فَأَوْتَرَتْ
"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 النَّبِيُّ ﷺ يُصَلِّي بِاللَّيْلِ وَأَنَا مُعْتَرِضَةٌ بَيْنَهُ وَبَيْنَ الْقِبْلَةِ فَإِذَا أَرَادَ أَنْ يُوتِرَ أَيْقَظَنِي فَأَوْتَرْتُ
"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 بِاللَّيْلِ وَأَنَا مُعْتَرِضَةٌ بَيْنَهُ وَبَيْنَ الْقِبْلَةِ فَإِذَا أَرَادَ أَنْ يُوتِرَ أَيْقَظَنِي فَأَوْتَرْتُ