It was reported from Abu An-Nadr, from Abu Salama bin 'Abdur Rahman, from 'Aishah, that she said:

"I used to be asleep while my legs would be in the front of the Messenger of Allah (ﷺ) while he was praying during the night. When he wanted to prostrate, he would prod my feet, so I would pull them up, and he would prostrate.

حَدَّثَنَا عَاصِمُ بْنُ النَّضْرِ، حَدَّثَنَا الْمُعْتَمِرُ، حَدَّثَنَا عُبَيْدُ اللَّهِ، عَنْ أَبِي النَّضْرِ، عَنْ أَبِي سَلَمَةَ بْنِ عَبْدِ الرَّحْمَنِ، عَنْ عَائِشَةَ، أَنَّهَا قَالَتْ كُنْتُ أَكُونُ نَائِمَةً وَرِجْلاَىَ بَيْنَ يَدَىْ رَسُولِ اللَّهِ صلى الله عليه وسلم وَهُوَ يُصَلِّي مِنَ اللَّيْلِ فَإِذَا أَرَادَ أَنْ يَسْجُدَ ضَرَبَ رِجْلَىَّ فَقَبَضْتُهُمَا فَسَجَدَ ‏.‏