Not graded
Hisn al-Muslim (Fortress of the Muslim) 54
((اللَّهُمَّ صَلِّ عَلَى مُحَمَّدٍ وَعَلَى أَزْوَاجِهِ وَذُرِّيَّتِهِ، كَمَا صَلَّيْتَ عَلَى آلِ إِبْرَاهِيمَ. وَبَارِكْ عَلَى مُحَمَّدٍ وَعَلَى أَزْواجِهِ وَذُرِّيَّتِهِ، كَمَا بَارَكْتَ عَلَى آلِ إِبْرَاهِيمَ. إِنَّكَ حَمِيدٌ مَجِيدٌ)).
(O Allah, send prayers upon Muhammad and upon the wives and descendants of Muhammad, just as You sent prayers upon the family of Ibraheem, and send blessings upon Muhammad and upon the wives and descendants of Muhammad, just as You sent blessings upon the family of Ibraheem. Verily, You are full of praise and majesty.)
Cited in Hisn al-Muslim (Fortress of the Muslim) (No. 54).