The Book of Forgetfulness (In Prayer)
13/71. Chapter:
How to say the salam to one's left
Sunan an-Nasai
أَخْبَرَنَا إِبْرَاهِيمُ بْنُ يَعْقُوبَ، قَالَ حَدَّثَنَا عَلِيُّ بْنُ الْحَسَنِ بْنِ شَقِيقٍ، قَالَ أَنْبَأَنَا الْحُسَيْنُ بْنُ وَاقِدٍ، قَالَ حَدَّثَنَا أَبُو إِسْحَاقَ، عَنْ عَلْقَمَةَ، وَالأَسْوَدِ، وَأَبِي الأَحْوَصِ، قَالُوا حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْعُودٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ يُسَلِّمُ عَنْ يَمِينِهِ " السَّلاَمُ عَلَيْكُمْ وَرَحْمَةُ اللَّهِ " . حَتَّى يُرَى بَيَاضُ خَدِّهِ الأَيْمَنِ وَعَنْ يَسَارِهِ " السَّلاَمُ عَلَيْكُمْ وَرَحْمَةُ اللَّهِ " . حَتَّى يُرَى بَيَاضُ خَدِّهِ الأَيْسَرِ .
'Abdullah bin Mas'ud narrated that: The Messenger of Allah (ﷺ) used to say salam to his right:As-salamu 'alaykum wa rahmatullah (peace be upon you and the mercy of Allah) , until the whiteness of his right cheek could be seen, and to his left: As-salamu 'alaykum wa rahmatullah (peace be upon you and the mercy of Allah) until the whiteness of his left cheek could be seen.
Reference : Sunan an-Nasa'i 1325In-book reference : Book 13, Hadith 147English translation : Vol. 2, Book 13, Hadith 1326