The ruling on making up the greeting of the mosque if the prayer is called for before it is performed

Question:
May Allah reward you, Honorable Shaykh. This questioner says: If I enter the mosque and the prayer has already been called for, is it obligatory for me to make up the greeting of the mosque after finishing the prayer?

Answer:
If it is the regular voluntary prayer of Fajr, yes, you should make it up after the prayer or during the Duha time. As for any other than the regular voluntary prayer of Fajr, this is a matter of consideration and disagreement among the scholars. If you make it up, there is nothing wrong with it.