The Book of Prayer
Bulugh al-Maram #388
كتاب الصلاة
وَعَنْ وَائِلِ بْنِ حُجْرٍ - رضى الله عنه - قَالَ: "صَلَّيْتُ مَعَ اَلنَّبِيِّ - صلى الله عليه وسلم -فَكَانَ يُسَلِّمُ عَنْ يَمِينِهِ: " اَلسَّلَام عَلَيْكُمْ وَرَحْمَةُ اَللَّهِ وَبَرَكَاتُهُ " وَعَنْ شِمَالِهِ: " اَلسَّلَامُ عَلَيْكُمْ وَرَحْمَةُ اَللَّهِ وَبَرَكَاتُهُ" رَوَاهُ أَبُو دَاوُدَ بِسَنَدٍ صَحِيحٍ.
Narrated Wa'il bin Hujr (RA):
I prayed with the Prophet (ﷺ) and he would give the Taslim (salutation) to his right side (saying), “Peace be upon you and the mercy and blessings of Allah”; and to his left side (saying), “Peace be upon you and mercy and the blessings of Allah.”
وَعَنْ وَائِلِ بْنِ حُجْرٍ - رضى الله عنه - قَالَ : "صَلَّيْتُ مَعَ اَلنَّبِيِّ - صلى الله عليه وسلم -فَكَانَ يُسَلِّمُ عَنْ يَمِينِهِ : " اَلسَّلَام عَلَيْكُمْ وَرَحْمَةُ اَللَّهِ وَبَرَكَاتُهُ " وَعَنْ شِمَالِهِ : " اَلسَّلَامُ عَلَيْكُمْ وَرَحْمَةُ اَللَّهِ وَبَرَكَاتُهُ" رَوَاهُ أَبُو دَاوُدَ بِسَنَدٍ صَحِيحٍ .
I prayed with the Prophet (ﷺ) and he would give the Taslim (salutation) to his right side (saying), "Peace be upon you and the mercy and blessings of Allah"; and to his left side (saying), "Peace be upon you and mercy and the blessings of Allah."
— Bulugh al-Maram, Hadith 388