Musannaf Ibn Abi Shayba 37:168

Abu Khalid al-Ahmar narrated to us, from Mujalid, from al-Sha'bi, from Silah, from Hudhayfah, who said: I heard him say: "When you see the first of the signs following one another, then expect the rest of them to follow one another like beads of a necklace that has been cut."