It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Hasten to perform good deeds before trials come like patches of a dark night. A man will be a believer in the morning and a disbeliever in the evening, or he will be a believer in the evening and a disbeliever in the morning. He will sell his religion for some worldly goods."