Meanwhile, things took a reverse turn for the Abbasid family. The army commanded by Abul Abbas and Abu Jafar Mansur, had come from Khorasan to Kufa, where they found the city decorated in black, the accepted colour of the Abbasids, and the people who crowded to the mosque also wore black clothes and black turbans with black banners planted in hands. Abu Salama led the prayers, after which he announced that Abu Muslim had now made it possible for the world of Islam to shake itself free from the Umayyads, and declared that it was to this end that he called upon them to recognize Abul Abbas, the brother of the murdered Ibrahim, as their rightful Imam and Caliph. Abul Abbas mounted the pulpit and made his inaugural speech, in which he named himself as as-Saffah (blood-shedder) and "identified the glory of God with his own interest and those of his house. He named the Abbasids as the Ahl-al-Bait from whom uncleanliness was removed, and denined that the Alids were more worthy of the caliphate." (vide Tabari, 3rd vol., p. 29). His speech was followed by a speech from his uncle, Daud bin Ali, who also emphasized that the rights of the Abbasids were legally inherited and there were but two legal caliphs in Islam: Ali bin Abu Talib and Abbas as-Saffah. He added that the caliphate would remain in the hands of the Abbasids until they passed it over to Isa bin Marium. (vide Tabari, 3rd vol., p. 31; Yaqubi, 2nd vol., p. 350 and Masudi, 3rd vol., p. 256). The excited crowd expressed their approval and gave their allegiance to Abul Abbas as the first caliph of the Abbasid caliphate in 132/750.