Greeting the mosque when a lesson or lecture is present

Question:
No, perhaps. Is it obligatory to perform the recommended practice after the prayer, or not, if there is a lecture or a red lesson previously, such that the place you are exposed to is some of it?

Answer:
If one enters the mosque, he prays two rak'ahs; he does not sit until he prays two rak'ahs. The Messenger (peace and blessings be upon him) ordered the one who entered while the sermon was being delivered to stand and pray two rak'ahs. He prays two rak'ahs, but he shortens them so that he can listen to the lesson or the sermon. As for sitting without praying the two rak'ahs, that is only if it is a time of prohibition. For example, after the 'Asr prayer or after the Fajr prayer; this is a time of prohibition where one does not pray the greeting of the mosque or anything else; he sits. But if the time is not a time of prohibition, he prays two light rak'ahs as the greeting of the mosque, then he sits. Yes.