What is the invocation that the Prophet Muhammad (peace be upon him) taught us to say for him?
 Narrated Ka`b bin Ujra:                     It was said, "O Allah's Apostle! 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."