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