It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "After me, tribulations like pieces of the dark night will cover my Ummah. In them a man will be a believer in the morning and a disbeliever in the evening, and a believer in the evening and become a disbeliever by the morning. People will sell their religion for a small amount of worldly goods." This hadith has a sahih (authentic) chain, but the two Shaykhs did not record it. Its supporting narration (shahid) is the hadith that makes the reality of this text clear.