From Sahih Muslim (Hadith 7398):
Abu Huraira reported Allah's Messenger (ﷺ) as saying:Hasten in performing these good deeds (before these) six things (happen): (the appearance) of the Dajjal, the smoke, the beast of the earth, the rising of the sun from the west, the general turmoil (leading to large-scale massacre) and death of masses and individuals
Reference: Muslim 7398