Sahih al-Bukhari 698
Sahih al-Bukhari · Book 10: Call to Prayers (Adhaan) · If a man stood on the left side of the Imam and the Imam drew him to his right side, then the Salat of none of them would be invalid
Narrated Ibn `Abbas:
حَدَّثَنَا أَحْمَدُ ، قَالَ حَدَّثَنَا ابْنُ وَهْبٍ ، قَالَ حَدَّثَنَا عَمْرٌو ، عَنْ عَبْدِ رَبِّهِ بْنِ سَعِيدٍ ، عَنْ مَخْرَمَةَ بْنِ سُلَيْمَانَ ، عَنْ كُرَيْبٍ ، مَوْلَى ابْنِ عَبَّاسٍ عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ نِمْتُ عِنْدَ مَيْمُونَةَ وَالنَّبِيُّ صلى الله عليه وسلم عِنْدَهَا تِلْكَ اللَّيْلَةَ ، فَتَوَضَّأَ ثُمَّ قَامَ يُصَلِّي، فَقُمْتُ عَلَى يَسَارِهِ، فَأَخَذَنِي فَجَعَلَنِي عَنْ يَمِينِهِ، فَصَلَّى ثَلاَثَ عَشْرَةَ رَكْعَةً، ثُمَّ نَامَ حَتَّى نَفَخَ ـ وَكَانَ إِذَا نَامَ نَفَخَ ـ ثُمَّ أَتَاهُ الْمُؤَذِّنُ، فَخَرَجَ فَصَلَّى وَلَمْ يَتَوَضَّأْ. قَالَ عَمْرٌو فَحَدَّثْتُ بِهِ بُكَيْرًا فَقَالَ حَدَّثَنِي كُرَيْبٌ بِذَلِكَ .
One night I slept at the house of (my aunt) Maimuna and the Prophet (ﷺ) was there on that night. He performed ablution and stood up for the prayer. I joined him and stood on his left side but he drew me to his right and prayed thirteen rak`at and then slept till I heard his breath sounds. And whenever he slept, he used to breathe with audible sounds. The Mu'adh-dhin came to the Prophet (ﷺ) and he went out and prayed the morning prayer) without repeating the ablution.