"The Hour (Resurrection) will not occur until 'Allah, Allah' is not said on earth."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لاَ تَقُومُ السَّاعَةُ حَتَّى لاَ يُقَالَ فِي الأَرْضِ اللَّهُ اللَّهُ  

"The Hour (Resurrection) will not occur as long as anyone says: 'Allah, Allah.'"  

قَالَ رَسُولُ اللَّهِ ﷺ لاَ تَقُومُ السَّاعَةُ عَلَى أَحَدٍ يَقُولُ اللَّهُ اللَّهُ