<P> In the Sīrat Abī Bakr Al - Ṣiddīq that compiled many narrations and compiled historical circumstances regarding the rule of Caliph Abu Bakr, Bilal accompanied the Muslim armies, under the commands of Said ibn Aamir al - Jumahi, to Syria . </P> <P> After Muhammad died in 632 AD, Bilal was one of the people who did not give bay'ah (the oath of allegiance) to Abu Bakr . It is documented that when Bilal did not give bay'ah to Abu Bakr, Umar ibn al - Khattab grabbed Bilal by his clothes and said, </P> <P> Is this the reward of Abu Bakr; he emancipated you and you are now refusing to pay allegiance to him? </P> <P> To which Bilal replied, </P>

Who was the first person to give adhan