Is it permissible to increase voluntary prayers between the adhan and the iqamah in the Fajr prayer?

Question:
He says: In our neighborhood mosque, I noticed the imam and some of the worshippers increasing their voluntary prayers between the adhan and the iqamah in the Fajr prayer, on the grounds that the adhan is called before the dawn breaks, so they continue their voluntary prayers until five minutes before the time for the iqamah, then they pray the Fajr sunnah in those minutes on the grounds that the dawn does not break until in those last five minutes. What is the ruling on this action?

Answer:
It is not permissible to deviate from the Muslims as long as the Muslims, as long as the Muslims, I mean, are confident in the timing and the calendar, that the adhan is based on the dawn. Do not deviate from them, my brother? Is it not permissible after the adhan, if the adhan is for the dawn, except for the Fajr sunnah before the obligatory prayer, and the tahajjud and voluntary prayers other than the sunnah end with the breaking of the dawn. And be with the Muslims as long as the Muslims are confident in this timing and in the adhan of the mu'adhdhin, do not deviate from them. Yes.