Musnad Abu Ya'la al-Mawsili 129:65

Sufyan ibn Waki' narrated to us, Abu Khalid al-Ahmar narrated to us, from Humayd, from Anas, that Abdullah ibn Salam asked the Prophet (peace be upon him) about the first of the signs of the Hour. He said: "Gabriel informed me that a fire will gather them from the east."