Can one send Salat on anybody other than the Prophet (ﷺ)
حَدَّثَنَا سُلَيْمَانُ بْنُ حَرْبٍ، حَدَّثَنَا شُعْبَةُ، عَنْ عَمْرِو بْنِ مُرَّةَ، عَنِ ابْنِ أَبِي أَوْفَى، قَالَ كَانَ إِذَا أَتَى رَجُلٌ النَّبِيَّ صلى الله عليه وسلم بِصَدَقَتِهِ قَالَ " اللَّهُمَّ صَلِّ عَلَيْهِ" فَأَتَاهُ أَبِي بِصَدَقَتِهِ فَقَالَ " اللَّهُمَّ صَلِّ عَلَى آلِ أَبِي أَوْفَى"
Narrated Ibn Abi `Aufa: Whenever somebody brought alms to the Prophet (ﷺ) the used to say, "Allahumma Salli 'Alaihi (O Allah! Send Your Salat (Grace and Honor) on him)." Once when my father brought his alms to him, he said, "O Allah! Send Your Salat (Grace and Honor) on the family of Abi `Aufa."