The ruling on entering the mosque while the mu'adhdhin is calling the adhan for prayer

This is a questioner who sent a set of questions. He says: My first question: If I enter the mosque and the mu'adhdhin is calling for prayer, should I pray two rak'ahs as the greeting of the mosque, or should I wait until the mu'adhdhin finishes the adhan?
Answer: The best is to... the mu'adhdhin, you wait and respond to the mu'adhdhin, then you pray two rak'ahs so that you combine the two good things, the two excellences, and the prescribed command. You start by responding to the mu'adhdhin, then you pray two rak'ahs. Yes.