Sad 38:15

وَمَا يَنظُرُ هَـٰٓؤُلَآءِ إِلَّا صَيْحَةً وَٰحِدَةً مَّا لَهَا مِن فَوَاقٍ

Wamā yanẓuru hāulāi illā ṣayḥatan wāḥidatan mā lahā min fawāqin

And these [disbelievers] await not but one blast [of the Horn]; for it there will be no delay.¹