Crossword clues for Muhammad's father-in-law 4 lettersAnswerClueOMARMuhammad's father-in-lawBAKRAbu ___ al-Siddiq (father-in-law of Muhammad)ABUBAKRMuhammad's father-in-law and, to Sunni Muslims, successor as leaderABU___-Bakr (Muhammad's father-in-law)ABU___-Bakr, father-in-law of Muhammad