"Abu Humaid As-Sa'idi told me that they said: 'O Messenger of Allah ﷺ, how should we send salah upon you?' The Messenger of Allah ﷺ said: 'Say: Allahumma sali 'ala Muhammadin wa azwajihi wa dhuriyatihi ( O Allah, send salah upon Muhamad and his wives and progeny)- in the narration of Al-Harith (one of the two who narrated it)-kama salaita 'ala Ibraim wa barik 'alaMuhammad wa azwajihi wa dhuriyatti (as You sent salah upon Irahim and send blessings upon Muhammad and his wives and progeny)- both of them said that- kama barakta 'ala ali Ibrahima innaka hamidun majid (as You sent blessings upon Ibrahim, You are indeed worthy of praise, Full of glory.)" Abu Abdur-Rahman (An-Nasa'i) said: Qutaibah informed us of this hadith two times, and perhaps he had missed a part of it. (Using translation from Nasāʾī 1294)  

أَخْبَرَنِي أَبُو حُمَيْدٍ السَّاعِدِيُّ أَنَّهُمْ قَالُوا يَا رَسُولَ اللهِ كَيْفَ نُصَلِّي عَلَيْكَ؟ قَالَ رَسُولُ اللهِ ﷺ «قُولُوا اللهُمَّ صَلِّ عَلَى مُحَمَّدٍ وَأَزْوَاجِهِ وَذُرِّيَّتِهِ» فِي حَدِيثِ الْحَارِثِ «كَمَا صَلَّيْتَ عَلَى آلِ إِبْرَاهِيمَ وَبَارِكْ عَلَى مُحَمَّدٍ وَأَزْوَاجِهِ وَذُرِّيَّتِهِ» قَالَا جَمِيعًا «كَمَا بَارَكْتَ عَلَى آلِ إِبْرَاهِيمَ إِنَّكَ حَمِيدٌ مَجِيدٌ» أَخْبَرَنَا قُتَيْبَةُ بِهَذَا الْحَدِيثِ مَرَّتَيْنِ وَلَعَلَّهُ أَنْ يَكُونَ سَقَطَ عَلَيْهِ مِنْهُ سَطْرٌ