Rabah bin Abdur Rahman narrates from his grandmother that she heard from her father that I heard the Prophet Muhammad (peace be upon him) say: The prayer of the one who does not have ablution is not valid, and the ablution of the one who does not mention the name of Allah in it is not valid, and a person cannot be a believer in Allah who does not believe in me, and a person cannot be a believer in me who does not love the Ansar.