Sahih Muslim Book - 4, Hadith - 907

حَدَّثَنَا يَحْيَى بْنُ يَحْيَى التَّمِيمِيُّ قَالَ قَرَأْتُ عَلَى مَالِكٍ عَنْ نُعَيْمِ بْنِ عَبْدِ اللَّهِ الْمُجْمِرِ أَنَّ مُحَمَّدَ بْنَ عَبْدِ اللَّهِ بْنِ زَيْدٍ الْأَنْصَارِيَّ وَعَبْدُ اللَّهِ بْنُ زَيْدٍ هُوَ الَّذِي كَانَ أُرِيَ النِّدَاءَ بِالصَّلَاةِ أَخْبَرَهُ عَنْ أَبِي مَسْعُودٍ الْأَنْصَارِيِّ قَالَ أَتَانَا رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَنَحْنُ فِي مَجْلِسِ سَعْدِ بْنِ عُبَادَةَ فَقَالَ لَهُ بَشِيرُ بْنُ سَعْدٍ أَمَرَنَا اللَّهُ تَعَالَى أَنَّ نُصَلِّيَ عَلَيْكَ يَا رَسُولَ اللَّهِ فَكَيْفَ نُصَلِّي عَلَيْكَ قَالَ فَسَكَتَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ حَتَّى تَمَنَّيْنَا أَنَّهُ لَمْ يَسْأَلْهُ ثُمَّ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قُولُوا اللَّهُمَّ صَلِّ عَلَى مُحَمَّدٍ وَعَلَى آلِ مُحَمَّدٍ كَمَا صَلَّيْتَ عَلَى آلِ إِبْرَاهِيمَ وَبَارِكْ عَلَى مُحَمَّدٍ وَعَلَى آلِ مُحَمَّدٍ كَمَا بَارَكْتَ عَلَى آلِ إِبْرَاهِيمَ فِي الْعَالَمِينَ إِنَّكَ حَمِيدٌ مَجِيدٌ وَالسَّلَامُ كَمَا قَدْ عَلِمْتُمْ.

It was narrated that Abu Mas'ud Al-Ansari said: "The Messenger of Allah (s.a.w) came to us while we were in the gathering of Sa'd bin 'Ubadah, and Bashir bin Sa'd said to him: 'Allah has commanded us to send Salat upon you. O Messenger of Allah! How should we send Salat upon you?' The Messenger of Allah (s.a.w) remained silent until we wished that he had not asked him, then the Messenger of Allah (s.a.w) said: 'Say: ''Allahumma salli 'ala Muhammadin wa 'ala ali Muhammadin kama salayta 'ala ali Ibrahim, wa barik 'ala Muhammadin wa 'ala ali Muhammadin kama barakta 'ala ali Ibrahim feel-'alamin, innaka hamidun majid (O Allah, send Your Salat (grace, honor and mercy) upon Muhammad and upon the family of Muhammad, as You sent Your Salat upon the family of Ibrahim, and send Your blessings upon Muhammad and the family of Muhammad, as You sent Your blessings upon the family of Ibrahim among the nations, You are indeed Praiseworthy, Most Glorious)." And the Salam is as you know."'