Imam Abu Ja'far Sadiq (may Allah have mercy on him) narrates from his father Imam Baqir (may Allah have mercy on him), who narrates from his father Imam Zain al-Abidin (may Allah have mercy on him), who narrates from his father Imam Husayn (may Allah be pleased with him), the following statement of Sayyiduna Ali (may Allah be pleased with him): The Noble Prophet (peace and blessings be upon him) asked: "When you stand for prayer, how do you recite?" I replied: I recite 'Alhamdu lillahi Rabbil 'alamin.' The Noble Prophet (peace and blessings be upon him) said: "You should recite 'Bismillahir Rahmanir Rahim.'"