Sayyiduna Uqbah bin Amir (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "Before the Hour, a black cloud like a shield will appear from the direction of the west. It will keep rising in the sky until it covers the whole sky. Then a caller will call out: O people! The people will turn to one another and ask: Did you hear? Some of them will say: Yes, and some will be in doubt. Then he will call out a second time: O people! The people will say: Did you hear? They will say: Yes. Then he will call out: O people! The command of Allah has come, so do not seek to hasten it." The Messenger of Allah (peace and blessings be upon him) said: "By the One in whose hand is my soul! Two men will be spreading out a garment, and they will not be able to fold it up, nor ever sell it; a man will be plastering his water trough with mud, but he will not be able to give anything to drink from it; and a man will be milking his she-camel, but he will never be able to drink it; and the people will be busy (with their own affairs)." This hadith has a sahih (authentic) chain of narration on the condition of Imam Muslim, but the two Shaykhs (Bukhari and Muslim) did not record it.