If one prays the Sunnah of Fajr at home, then goes to the mosque before the prayer has started, does he pray the greeting of the mosque?

Question:
Honorable Shaykh, may Allah grant you success. He says: If one prays the Sunnah of Fajr at home, then goes to the mosque, and the prayer has not yet started, does he pray the greeting of the mosque?

Answer:
There is a difference of opinion regarding whether the greeting of the mosque is prayed during the prohibited times or not. If he prays it based on the view that it is one of the prayers with a cause, there is no harm. And if he leaves it and sits, relying on the prohibition of prayer during the prohibited times, there is no harm. Yes.