In 1407 he raided Georgia, took 15,000 prisoners and killed Giorgi VII.[8] Abu Bakr and his father Miran Shah tried to recapture Azerbaijan, but on 20 April 1408, Qara Yusuf inflicted a decisive defeat on them at the Battle of Sardrud in which Miran Shah was killed. This battle, one of the most important in the history of the Orient, nullified the results of Timur's conquests in the West.[9]