It is narrated from Sayyiduna Abu Darda’ (may Allah be pleased with him), he says: We were discussing future events in the presence of the Messenger of Allah (peace and blessings be upon him) when he said: When you hear that a mountain has moved from its place, then verify it, but when you hear that a man's character has changed, do not verify this, because he will soon return to the character upon which his nature was created.