Question
What is the ruling if they pray in congregation in a neighborhood in a house or in a house mosque without Adhan and Iqama?
Answer
If they are informed by the Adhan and Iqama of others, it suffices them, but they have acted improperly by leaving them out; because the Adhan of the neighborhood serves as an Adhan for individuals and not for the congregation. See: Bada'i 1: 152-154.