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

Sahih al-Bukhari · Book 10 · Hadith 698

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 …

Narrated Ibn `Abbas: 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 dre…