Sunan an-Nasa'i 1286

It was narrated that Abu Mas'ud Al-Ansari said:"It was said to the Prophet (ﷺ): We have been commanded to send salah and salams upon you. We know how to send salams, but how should we send salah?' He said: Say: 'Alahumma salli 'ala Muhammad wa 'ala ali Muhammad, kama sallaita 'ala Ibrahima wa barik 'ala Muhammad kama barakta 'ala ali Ibrahim fil-'alamin, innaka hamidun majid (O Allah, send salah upon Muhammad and upon the family of Muhammad, as You sent salah upon the family of Ibrahim)