Sayyiduna Awf bin Malik (may Allah be pleased with him) says: I came to the Prophet (peace and blessings be upon him) while he (peace and blessings be upon him) was in a tent of leather. I greeted him with salam and said: May I come in? He (peace and blessings be upon him) said: "Come in." I put my head inside and saw the Messenger of Allah (peace and blessings be upon him) performing a thorough ablution. I said: O Messenger of Allah, shall I come in completely? He (peace and blessings be upon him) said: "Completely." When I sat down, he said to me: "Count six things before the Hour: the death of your Prophet." Awf says: I was grieved by this as I had never been grieved before. He (peace and blessings be upon him) said: "Say: one." I said: One. He (peace and blessings be upon him) said: "And the conquest of Bayt al-Maqdis; and a tribulation in which pestilence will spread among the Arabs - it will be a disease that seizes you like the disease of sheep; and wealth will spread among you so much that a man will be given a hundred dinars and will be displeased; and there will be a truce between you and Banu al-Asfar, then they will break the covenant and come against you under eighty banners, with twelve thousand under each banner."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 15162