Musnad Ahmad 830:41

Yazid ibn Harun narrated to us, Al-Awwam informed us, Sa'id ibn Jumhan narrated to us, from Ibn Abi Bakrah, from his father, who said: "The Prophet, peace and blessings of Allah be upon him, mentioned a land called Al-Basirah, next to which is a river called the Tigris, which has many date palms. The Banu Qantura will descend upon it, and the people will divide into three groups: a group that will join their origins and perish, a group that will take upon themselves and disbelieve, and a group that will place their offspring behind their backs and fight. Their slain are martyrs, and Allah will grant victory to the remainder of them." Yazid was uncertain about it once and said: "Al-Basirah or Al-Basra."