Sahih Bukhari

Narrated Ka`b bin Ujra:It was said, ""O Allah's Messenger (ﷺ)! We know how to greet you, but how to invoke Allah for you?"" The Prophet said, ""Say: Allahumma salli ala Muhammadin wa'ala `Ali Muhammaddin, kama sallaita 'ala all Ibrahim, innaka Hamidun Majid