Recognizing the value of voluntary association among Islamic institutions of like faith and practice, Bayt ar-Rahmah li ad-Da‘wa al-Islamiyyah Rahmatan li al-‘Alamin (Home of Divine Grace for Revealing and Nurturing Islam as a Blessing for All Creation) exists in voluntary cooperative fellowship with the Nahdlatul Ulama—a network of traditional ahlussunnah wal jamaah (Sunni Muslim) institutions that constitutes the largest Muslim organization in the world.

Founding directors and officers of Bayt ar-Rahmah include the spiritual leader of the Nadlatul Ulama (Kyai Haji A. Mustofa Bisri) and the General Secretary of its Supreme Council (Kyai Haji Yahya Cholil Staquf).