Sayyiduna Marrah Bahzi (may Allah be pleased with him) narrates: Once we were walking with the Prophet Muhammad (peace and blessings be upon him) on a road in Madinah. The Prophet (peace be upon him) said: What will you do during a tribulation that will spread over the earth like the horn of a cow? The people asked: O Messenger of Allah, what should we do? The Prophet (peace be upon him) said: It is obligatory upon you to stay with that person and his companions. (The narrator says:) I quickly rushed towards the person to whom the Prophet (peace be upon him) had indicated and asked: O Messenger of Allah, is it this one? The Prophet (peace be upon him) said: Yes, it is he. And that was Sayyiduna Uthman Ghani (may Allah be pleased with him).