Sahih Bukhari

Narrated Abu Sa`id Al-Khudri:We said, ""O Allah's Messenger (ﷺ)! (We know) this greeting (to you) but how shall we invoke Allah for you?"" He said, ""Say! Allahumma salli ala Muhammadin `Abdika wa rasulika kama- sallaita 'ala all Ibrahim wa barik ala Muhammadin wa'ala all Muhammadin kama barakta 'ala all Ibrahim.' Al-Laith said: 'Ala Muhammadin wa 'ala all Muhammadin kama barakta ala all Ibrahim. Narrated Ibn Abi Hazim and Ad-Darawardi: Yazid said, ""Kama sallaita ala Ibrahima wa barik 'ala Muhammad in wa all Muhammadin kama barakta 'ala Abrahima wa all Ibrahim