وَمَا يَنظُرُ هَؤُلَاء إِلَّا صَيْحَةً وَاحِدَةً مَّا لَهَا مِن فَوَاقٍ ﴿١٥﴾

And these only wait for a single Sayhah there will be no pause or ending thereto.

Malik narrated from Zayd bin Aslam;

"There will none who can avert it,''

i.e., they will only wait for the Hour that it shall come upon them suddenly while they perceive not. But some of its portents have already come, i.e., it has drawn nigh.

This Sayhah is the blast on the Trumpet when Allah will command Israfil to sound a long note, and there will be no one in the heaven or on earth but will be terrified, except those whom Allah spares.