I prayed with the Prophet ﷺ one night and stood on his left side. Messenger of Allah ﷺ caught hold of my head from behind and drew me to his right and then offered the prayer and slept. Later the Mu'adh-dhin came and the Prophet ﷺ stood up for prayer without performing ablution.  

صَلَّيْتُ مَعَ النَّبِيِّ ﷺ ذَاتَ لَيْلَةٍ فَقُمْتُ عَنْ يَسَارِهِ فَأَخَذَ رَسُولُ اللَّهِ ﷺ بِرَأْسِي مِنْ وَرَائِي فَجَعَلَنِي عَنْ يَمِينِهِ فَصَلَّى وَرَقَدَ فَجَاءَهُ الْمُؤَذِّنُ فَقَامَ وَصَلَّى وَلَمْ يَتَوَضَّأْ