Reference: al-Muntaqaa min Fataawa Fadheelatush-Shaykh Saalih Ibn Fowzaan – Volume 2, Page 99, Fatwa No.83
Question: What does this hadeeth mean: «The [Last] Hour shall not be established until “Allaah! Allaah!” shall cease to be said upon the earth»?
Response: The [Last] Hour shall not be established except upon the worst of creation, and the disbelievers. As for the mu.minoon (believers), then their souls shall be taken before then.