If one catches the imam in the final tashahhud, does he join them or wait for the second congregation?

Question:
May Allah reward you with good and do you good. The listener Hadi ibn Yahya al-Mahdi from Riyadh sent a letter containing a collection of questions. In one of them, he says: The one who comes to the prayer while the imam is sitting for the final tashahhud, which is better: does he sit with him or wait for the second congregation, given that there is a second congregation?

Answer:
The best is to wait for the second congregation, as long as he is certain that there are people behind him with whom he will pray, then he waits. But if he does not know that there are people who will come and pray with him, then he joins the imam in what remains, and he gets the reward of following the imam. Otherwise, catching the congregation is valid, though it is not caught except with one rak'ah. But he joins with him in order to obtain the reward of following the imam. And Allah, Mighty and Majestic, says: Your question? Yes.