Musnad Ahmad 907:54

Aswad ibn Amir narrated to us, Sharik narrated to us, from Simak, from Jabir ibn Samurah, who attributed it to the Prophet (ﷺ), he said: "This religion will continue to stand, a group will fight for it, until the Hour is established." Sharik said: I heard it from his brother, Ibrahim ibn Harb. I said to Sharik: From whom did he mention it was to you? He said: From Jabir ibn Samurah.