It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said:“Whoever performed prayer and did not recite Surah Al-Fatihah in it, his prayer is incomplete, incomplete, incomplete, it is never complete.”Abu Sa’ib said: O Sayyiduna Abu Hurairah (may Allah be pleased with him)! Sometimes I am behind the Imam. So Sayyiduna Abu Hurairah (may Allah be pleased with him) pressed my arm and said: Recite it in your heart, O resident of Fars! Because I have heard from the Messenger of Allah (peace and blessings be upon him), he used to say: Allah the Exalted said:“I have divided the prayer between Myself and My servant into two halves, half for Me and half for My servant, and My servant shall have what he asks for.”The Messenger of Allah (peace and blessings be upon him) said:“Recite: The servant says: All praise is due to Allah, Lord of all the worlds. The Lord says: ‘My servant has praised Me.’ The servant says: The Most Merciful, the Most Compassionate. The Lord says: ‘My servant has extolled Me.’ The servant says: Master of the Day of Judgment. The Lord says: ‘My servant has glorified Me.’ The servant says: You alone we worship and You alone we ask for help. ‘This verse is between Me and My servant’ (that is, the Lord’s greatness and the servant’s declaration of servitude). The servant says: Guide us to the straight path, the path of those upon whom You have bestowed Your grace, not of those who have incurred Your wrath, nor of those who have gone astray. ‘These verses are for My servant, and My servant shall have what he asks for.’”