What is required of the one who enters the mosque during the adhan: does he sit, or does he pray the greeting of the mosque?

Question:
If one enters the mosque while the mu'adhdhin is calling the adhan, does he wait until the mu'adhdhin finishes, or does he begin the prayer of greeting the mosque?

Answer:
It is better for him to wait, follow the mu'adhdhin, and recite the supplication prescribed after the adhan, and then perform the greeting of the mosque, so that he combines the two virtues: the virtue of following the mu'adhdhin and the supplication after the adhan, and the virtue of the greeting of the mosque. Yes.