"The Hour (Resurrection) will not occur as long as anyone says: 'Allah, Allah.'"
Sahih Muslim Book 1, Hadith 283
← Previous Hadith "The Hour (Resurrection) will not occur until 'Allah, Allah' is not said on earth."

Sahih Muslim Book 1, Hadith 282 Next Hadith → We were in the company of the Messenger of Allah (ﷺ) when he said. Count for me those who profess al-Islam. We said: Messenger of Allah, do you entertain any fear concerning us and we are (at this time) between six hundred and seven hundred (in strength). He (the Holy Prophet) remarked: You don't perceive; you may be put to some trial, He (the narrator) said: We actually suffered trial so much so that some of our men were constrained to offer their prayers in concealment.

Sahih Muslim Book 1, Hadith 284