The Return of Jesus (Issa) son of Mary in Islam
Hadith - Sahih Bukhari 4.657, Narrated Abu Huraira, r.a.Allah's Apostle said, "By Him in Whose Hands my soul is, surely (Jesus,) the son of Mary will soon descend amongst you and will judge mankind justly (as a Just Ruler); he will break the Cross and kill the pigs and there will be no Jizya (i.e. taxation taken from non-Muslims). Money will be in abundance so that nobody will accept it, and a single prostration to Allah (in prayer) will be better than the whole world and whatever is in it." Abu Huraira added "If you wish, you can recite (this verse of the Holy Book): 'And there is none Of the people of the Scriptures (Jews and Christians) But must believe in him (i.e Jesus as an Apostle of Allah and a human being) Before his death. And on the Day of Judgment He will be a witness Against them."
Abu Daoud says: that there will be no jizya means that there will be no more Christians or Jews. In other words the return of Jesus will result in the destruction of some of the Ahl al Kitaab and the conversion of the others to Islam.