And the imam must prostrate by forgetfulness. When the person being followed prostrates, the scholars differed as to whose condition this is. Some say he prostrates with the imam and then stands up to fulfill what he owes, whether the imam prostrates before or after the salutation, and some say he makes up for it and then prostrates, and some say if he prostrates them before. He prostrated them with him, and if he prostrated after the salutation, he prostrated them after he made up for it. And whoever says that he prostrates them with the imam and then prostrates them again after making up for it. What I say is that the person being led in prayer should not be without knowing what the imam overlooked, or he does not know. If he does not know, then the imam is not alone. Either he prostrates them before the salaam and prostrates them with him. So if The imam greeted him and stood up to fulfill what he owed, and if the i