He was the first companion of the black race (Abyssinia). His full name is Bilaal ibn Rabaah. He shouted "Allah is one" for thirteen years while on the torture of his master. He embraces Islam while a slave and emancipated by Abu Bakr As-Siddiiq.  He was chosen by  Allah's Messenger to be the first Muadhin in Islam. He stopped calling prayer after the demise of the Prophet. He called his last prayer in Syria in honour of Umar. He died in Syria.