o:1016 Siyar at-tawhid ar With Muhammad's death in 632, disagreement broke out over who would succeed him as leader of the Muslim community. Umar ibn al-Khattab, a prominent companion of Muhammad, nominated Abu Bakr, who was Muhammad's companion and close friend. Others added their support and Abu Bakr was made the first caliph. Abu Bakr's immediate task was to avenge a recent defeat by Byzantine forces, although he first had to put down a rebellion by Arab tribes in an episode known as the Ridda wars, or "Wars of Apostasy". Pošto je Muhamed umro 632. godine nove ere, nastao je spor oko toga ko će ga naslediti kao vođa islamske zajednice. Umar ibn al-Hatab, istaknuti Muhamedov pratilac, imenovao je Abu Bakra koji je bio Muhamedov pratilac i blizak prijatelj. Drugi su pružili podršku Abu Bakru i on je postao prvi halifa. Prvi Abu Bakrov zadatak bio je da se osveti Vizantiji za poraz od njihove vojske iako je prvo morao da uguši pobunu arabljanskih plemena u događaju poznatom kao ratovi rida ili ratovi sa odmetnicima. no 2012-03-15T13:13:08.266Z 44 no 46 Nepoznat application/pdf 95855 http://phaidrabg.bg.ac.rs/o:1016 no yes 2 70 Siyar at-tawhid