Is it required for the mu'adhin, in the case of combining prayers, to call the adhan for the combined prayer?

Yes, I understood from his question that if prayers are combined in the mosque, should the adhan be called for 'Isha? Like if we combine Maghrib and 'Isha here, should the adhan be called for the prayer? Yes, the adhan should be called, because there are people who did not combine.

So they come and pray. As for during the combination, there is one adhan and two iqamas, the adhan for Maghrib.

And an iqama for Maghrib and an iqama for 'Isha.

In the case that our mosque combines prayers, are we required to pray 'Isha if the lesson ends at the iqama of Ibn Ghader?

No, you are not required to pray 'Isha if you have already combined. If the mosque had a lesson or something, you are not required to pray 'Isha, but do not put yourself in a position of suspicion.

Because the Prophet ﷺ once prayed.

When he turned around, he saw two men sitting at the end of the row.

He said, "Aren't you Muslims?" They said, "Yes, O Messenger of Allah." He said, "What kept you from praying with us?" They said, "We already prayed at our homes, we already prayed, we're done."

He said, "Don't do that. If you pray at your homes and then come to the mosque, pray with them, and it will be extra for you."

A voluntary prayer. This is so that a person is not accused in his religion. Imagine, the prayer is going on, people are looking at the mosque, what will people say about you?

You have put yourself in a suspicious position, so a person should not put himself in a.

Suspicion comes from this, but he is not required to pray, rather it is to avoid suspicion about himself.