It is narrated from Hazrat Khabbab (may Allah be pleased with him) that once we were sitting at the door of the Prophet (peace be upon him) waiting for him to come out for the Zuhr prayer. The Prophet (peace be upon him) came out and said: "Listen to me." The companions (may Allah be pleased with them) replied, "We are present." The Prophet (peace be upon him) again said: "Listen to me." The companions (may Allah be pleased with them) again replied as before. The Prophet (peace be upon him) said: "Soon some rulers will come over you; do not help them in their oppression, and whoever affirms their lies will never be able to come to me at the Pond of Kawthar."