Musnad Abu Ya'la al-Mawsili 109:79

Hafs al-Hulwani narrated to us, Bahlul ibn Muwarriq al-Shami narrated to us, from Musa ibn Ubaydah, from his brother, from Jabir, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "My Ummah will continue to be manifest upon the truth until Isa ibn Maryam descends. Their leader will say: 'Come forward.' He will say: 'No, you are leaders of one another,' an honor by which Allah has honored this Ummah."