And these [disbelievers] await not but one blast [of the Horn]; for it there will be no delay.
The Saheeh International Quran Translation
وَمَا يَنظُرُ هَٰٓؤُلَآءِ إِلَّا صَيْحَةً وَٰحِدَةً مَّا لَهَا مِن فَوَاقٍAnd these [disbelievers] await not but one blast [of the Horn]; for it there will be no delay.