It is narrated from Hazrat Hudhaifa (may Allah be pleased with him) that once we were sitting with Hazrat Umar (may Allah be pleased with him) when Hazrat Umar (may Allah be pleased with him) said, "Who among you remembers the hadith of the Prophet (peace and blessings be upon him) regarding tribulations?" I said, "I remember it just as the Prophet (peace and blessings be upon him) said it." Hazrat Umar (may Allah be pleased with him) said, "You are very brave." I said, "The trials that befall a person regarding his family, wealth, children, and neighbors are expiated by prayer, zakat, enjoining good, and forbidding evil." Hazrat Umar (may Allah be pleased with him) said, "I am not asking about that. I am asking about the tribulation which will spread like the waves of the sea." I said, "O Commander of the Faithful! You do not need to worry about it. Between you and it, there is a closed door." Hazrat Umar (may Allah be pleased with him) asked, "Will the door be broken or opened?" I said, "It will be broken." Hazrat Umar (may Allah be pleased with him) said, "Then it will never be closed again." We asked, "Did Hazrat Umar (may Allah be pleased with him) know who the door was?" Hazrat Hudhaifa (may Allah be pleased with him) said, "Yes! Just as he knew that night comes after day. I narrated the hadith to him, not a riddle." Then the awe of Hazrat Hudhaifa (may Allah be pleased with him) prevented us from asking who the door was, so we said to Masruq, and he asked, and Hazrat Hudhaifa (may Allah be pleased with him) said, "The door was Hazrat Umar (may Allah be pleased with him) himself."