حَدَّثَنَا عَمَّارُ بْنُ طَالُوتَ، حَدَّثَنَا عَبْدُ الْمَلِكِ بْنُ عَبْدِ الْعَزِيزِ الْمَاجِشُونُ، حَدَّثَنَا مَالِكُ بْنُ أَنَسٍ، عَنْ عَبْدِ اللَّهِ بْنِ أَبِي بَكْرِ بْنِ مُحَمَّدِ بْنِ عَمْرِو بْنِ حَزْمٍ، عَنْ أَبِيهِ، عَنْ عَمْرِو بْنِ سُلَيْمٍ الزُّرَقِيِّ، عَنْ أَبِي حُمَيْدٍ السَّاعِدِيِّ، أَنَّهُمْ قَالُوا يَا رَسُولَ اللَّهِ أُمِرْنَا بِالصَّلاَةِ عَلَيْكَ فَكَيْفَ نُصَلِّي عَلَيْكَ فَقَالَ ‏"‏ قُولُوا اللَّهُمَّ صَلِّ عَلَى مُحَمَّدٍ وَأَزْوَاجِهِ وَذُرِّيَّتِهِ كَمَا صَلَّيْتَ عَلَى إِبْرَاهِيمَ وَبَارِكْ عَلَى مُحَمَّدٍ وَأَزْوَاجِهِ وَذُرِّيَّتِهِ كَمَا بَارَكْتَ عَلَى آلِ إِبْرَاهِيمَ فِي الْعَالَمِينَ إِنَّكَ حَمِيدٌ مَجِيدٌ ‏"‏ ‏.‏

It wasnarrated from Abu Humaid As-Sa’di that they said: “O MessengerofAllah! We have been commanded to send peace and blessings upon you.How should we send peace and blessings upon you?” He said: “Say:Allahumma salli ‘ala Muhammadin wa azwajihi wa dhurriyatihi, kamasallayta ‘ala Ibrahim; wa barik ‘ala Muhammadin wa azwajihi wadhurriyatihi kama barakta ‘ala ali Ibrahim fil-‘alamin, innakaHamidumMajid (O Allah, send Your grace, honour and mercy uponMuhammad andhis wives and offspring, as You sent Your grace, honourand mercy uponIbrahim. O Allah, send Your blessings upon Muhammadand his wives andoffspring, as You sent Your blessings upon thefamily of Ibrahim amongthe nations, You are indeed Praiseworthy,Most Glorious).” Translation Not Available

Book Ref: Sunan Ibn Majah Book 5 Hadith 905
Web Ref:  Sunan Ibn Majah Vol 1 Book 5 Hadith 905