The Messenger of Allah ﷺ said, "Hasten to do good deeds before six things appear: the rising of the sun from its place of setting, the smoke, the beast of the earth, the Dajjal, the private affair of one of you, and the general affair."
حدثنا حرملة بن يحيى حدثنا عبد الله بن وهب أخبرني عمرو بن الحارث وابن لهيعة عن يزيد بن أبي حبيب عن سنان بن سعد
عن رسول الله ﷺ قال بادروا بالأعمال ستا طلوع الشمس من مغربها والدخان ودابة الأرض والدجال وخويصة أحدكم وأمر العامة
[Its chain of transmission is hasan] Busiri graded it hasan, and it has a corroborating narration in Muslim, "The Book of Trials," chapter on the remainder of the hadiths about Dajjal, no. 2947/128, 129, from the hadith of Abu Hurairah.