If the Azan and Iqamah are Fard Kifayah, does the Iqamah cease to be an obligation for a mosque if it is heard from a nearby mosque or if it is known that it will be established there, just as the Azan ceases to be an obligation?

Scholars differ on the ruling concerning the Adhan (call to prayer) and Iqamah (second call to prayer). Some consider them Sunnah (recommended), while others deem them Wajib (obligatory) upon every congregation.

According to the opinion that the Adhan and Iqamah are Fard Kifayah (a communal obligation that, if fulfilled by some, absolves others), then a single Adhan in a city is sufficient if it achieves the purpose of informing the people. As for the Iqamah, the apparent implication of stating that it is Fard Kifayah is that a single Iqamah in a city is sufficient, similar to the Adhan, and even more so. The Adhan was legislated to announce the entry of the prayer time, and the Iqamah was legislated to announce the commencement of the prayer.