I asked the Prophet (ﷺ) " What " is the greatest sin with Allâh?" He said, "That you set up a rival unto Allâh though He Alone created you." I said, "That is indeed a great sin." Then I asked, "What is next?" He said, "To kill your son lest he should share your food with you." I asked, "What is next?" He said " To commit illegal sexual intercourse with the wife of your neighbour." [6:4-O.B]