When the call to prayer echoes through the masjid or the streets, on TV, or perhaps in the ears of a newly born Muslim baby, a believer immediately remembers Allah - God, the Creator of the heavens and the earth. This book relays how, through God's grace, a humble person born into slavery became a noble companion of the beloved Prophet Muhammad, may the peace and blessings of God be with him. How the Prophet, peace be upon him (pbuh), selected Bilal ibn Rabah to become his trusted friend, treasurer, and the first muezzin (caller to prayer) of Islam is a wondrous story.