Chapter on What Allah سبحانه وتعالى, the Almighty, Has Made Permissible and Prohibited in Marriage

Muhammad ibn Abi Umayr narrated from Anbasa ibn Mus'ab, who said: I asked Abu Abdullah عليه السلام about a man who had three wives and then married two more women in a single contract. He consummated the marriage with one of them and then died. Imam عليه السلام said: "If he consummated the marriage with the woman whose name was mentioned first during the marriage contract, then his marriage is valid, and she must observe the waiting period ('iddah), and she is entitled to inheritance. However, if he consummated the marriage with the woman whose name was mentioned after the first woman, then his marriage is invalid, she is not entitled to inheritance, but she must observe the waiting period ('iddah).