Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: "Five signs have passed, and five of them remain: the splitting of the moon, and we have seen it; and al-Dukhan (the smoke) has passed; and al-Batshah al-Kubra (the great seizure) has passed; and al-Yawm al-'Aqim (the barren day) has passed; and al-Lizam (the inescapable punishment) has also passed."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10009