What is the ruling for a man is married to four wives simultaneously and divorces one of them with a revocable divorce on the first day of the month? Is it permissible for him to take another wife other than the one he divorced? Does a man observe a waiting period after divorce or must he wait until the waiting period of the wife he divorced ends before remarrying so as not to violate the juristic rule which states that it is impermissible for a man to combine between five wives in marriage?