Does one who prayed the rawatib of Fajr at home and then entered the mosque before the iqamah pray the greeting of the mosque?

Question:
Honorable Shaykh, may Allah grant you success, a questioner says: If I prayed the rawatib of Fajr at home and then entered the mosque before the iqamah, do I pray the greeting of the mosque, or do I sit down directly and wait for the iqamah?

Answer:
No, pray the greeting of the mosque. When any of you enters the mosque, he does not sit until he prays two rak'ahs. This is a general rule.