Jami` at-Tirmidhi 2195
جامع الترمذي#2195SahihAbu Hurairah narrated that the Messenger of Allah(s.a.w) said:"Rush to do good deeds. A Fitnah will occur that is like a portion of the dark night, morning will come upon a man as a believer, who will be a disbeliever in the evening, and evening will come upon a believer, who will be a disbeliever in the morning. One of them will sell his religion for goods of the world
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiSahih Muslim
In-book reference: 33:38