It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that he said: "A time will come upon the people when they will gather (in large numbers) in the mosques, yet not a single one of them will be a believer." This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it.

It is narrated from Sayyiduna Abu Dharr (may Allah be pleased with him) that he said: We were with the Prophet (peace and blessings be upon him) on a journey. When we returned, some people hurried ahead and entered Madinah. The Prophet (peace and blessings be upon him) asked about them and was told that they had hurried to Madinah. He (peace and blessings be upon him) said: "Soon they will leave it when it is in its best condition. If only I knew when that fire will come out from the mountain of al-Warraq by whose light the necks of the Bactrian camels kneeling in Busra will shine as if in the light of day." This hadith has a sahih (authentic) chain, but the two Shaykhs (Bukhari and Muslim) did not record it.