A person entered the mosque and found the imam saying the ameen, and he said the ameen with him before entering the prayer. Does he receive the reward for the ameen?

Question : A person says: He entered the mosque and found the imam saying the ameen, and he said the ameen with him. He says the ameen, or he says the ameen even on the waw after the dammed alif, where the alif before it becomes a waw. He said the ameen with him before entering, or before he entered? That is with the alif and the nun, whereas this one is with the 'ayn and the nun, before he entered the row. Does he receive the virtue of the ameen?

Answer : The answer is no. The virtue of the ameen is not recorded for anyone except for the one who has entered the prayer.