Aban ibn Abi Ayyash narrates from Sulaym ibn Qays: “I heard Hadhrat Ali (AS) saying, when a person asked him a question concerning Iman (Faith). The person said: “O Amirul Mumineen, please tell me about Iman. After you and except you, I will not ask this question.” Hadhrat Ali (AS) said: “A person came to the Holy Prophet (SAW) and asked a similar question to him like the one you have asked me. He said a similar thing to yours.” Then he (Ali AS) started telling and then told him “Sit down”. the person said: “I have accepted Iman.” Hadhrat Ali (AS) turned to him and said: “Don’t you know that Archangel Jibra’eel came to the Holy Prophet (SAW) in the form of a human being and asked him what Islam is. The Holy Prophet (SAW) replied: “To bear witness that there is no god except Allah and Muhammad is His Prophet, to pray (salat), give alms (zakat), visit the House (hajj), to fast during the month of Ramadhan, and to have ritual bath after sexual intercourse.” The he asked (Angel) asked: “what is Iman?” The Holy Prophet (SAW) replied: “To believe in Allah, His Angels, His Book, His Prophets, Life after death, Qadr (fate) whether it be bad or good, sweet or sour.