Silsilat al-Ahadith al-Sahihah

Lady Umm Habibah (may Allah be pleased with her) narrates from Lady Zainab bint Jahsh (may Allah be pleased with her), she says: The Messenger of Allah (peace and blessings of Allah be upon him) came to us one day, he was anxious and his face was red, and these words were on his tongue: “«لا اله الا الله» Woe to the Arabs because of an evil that has drawn near, today a portion has been opened from the wall of Gog and Magog.” And the Prophet (peace and blessings of Allah be upon him) made a circle with his two fingers (the thumb and the finger next to it) to show it. I said: O Messenger of Allah! Will we be destroyed while there are righteous people among us? He (peace and blessings of Allah be upon him) said: “Yes, when evil becomes widespread.”