As Saffat, 19 Ayah
37:19
فَإِنَّمَا هِيَ زَجۡرَةٞ وَٰحِدَةٞ فَإِذَا هُمۡ يَنظُرُونَ ١٩
Fa'innamā Hiya Zajratun Wāĥidatun Fa'idhā Hum Yanžurūna
It will be only one shout, and at once they will be observing.