Umayya ibn Khalaf

Umayya ibn Khalaf ibn Wahb ibn Hudhafa ibn Jumah al-Jumahi was an Arab slave master and the chieftain of the Banu Jumah of the Quraysh in the seventh century. He was one of the chief opponents against the Muslims led by the Islamic prophet Muhammad. Umayya is best known as the master of Bilal ibn Rabah, a slave he tortured for embracing Islam who eventually became the first mu'azzin.