حَدَّثَنَا عَبْدَةُ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا يَحْيَى بْنُ آدَمَ، حَدَّثَنَا مُوسَى بْنُ قَيْسٍ الْحَضْرَمِيُّ، عَنْ سَلَمَةَ بْنِ كُهَيْلٍ، عَنْ عَلْقَمَةَ بْنِ وَائِلٍ، عَنْ أَبِيهِ، قَالَ صَلَّيْتُ مَعَ النَّبِيِّ صلى الله عليه وسلم فَكَانَ يُسَلِّمُ عَنْ يَمِينِهِ السَّلاَمُ عَلَيْكُمْ وَرَحْمَةُ اللَّهِ وَبَرَكَاتُهُ " . وَعَنْ شِمَالِهِ " السَّلاَمُ عَلَيْكُمْ وَرَحْمَةُ اللَّهِ " ."
Narrated Wa'il ibn Hujr:
I offered prayer along with the Prophet (ﷺ). He would give the salutation to his right side (saying): Peace be upon you and the mercy of Allah and His blessings; and to his left side (saying): Peace be upon you and mercy of Allah.
Reference: Sunan Abi Dawud 997
In-book : Book 2, Hadith 608
English translation : Book 3, Hadith 992