What is the ruling on one who holds a lesson and sermon between the adhan and the iqamah?

Question : Meaning, he holds the sermon or the lesson between the adhan and the iqamah so that he can gather the ma'mumin (those praying behind the imam). Because it is a place for that.

Answer : Collective supplication is not reported from the Messenger (peace and blessings be upon him) nor from the Companions. And although supplication between the adhan and the iqamah is likely to be answered, this has not been reported. As for holding a lesson between the adhan and the iqamah, there is nothing wrong with it, and people have been accustomed to it for a long time. When the adhan is called, the speaker begins the hadith until the congregation gathers, especially in the 'Isha' prayer.