It is the athan in a man’s normal voice without microphones and without any barriers such as concrete buildings or double glazed windows.

It is the distance of about 3-4 km.

You said that it’s wajib upon anyone to pray in congregation in a masjid if he can hear the athan from it. My question is: Is it the athan given by microphone or athan in its natural form?

Rulings on mosques |