On the Day the blast [of the Horn] will convulse [creation],
Tafseer
{ يوم ترجف الراجفة } النفخة الأولى بها يرجف كل شيء، أي يتزلزل فوصفت بما يحدث منها.
{The Day the Earth Shakes with the Earthquake} The first blast will cause everything to shake, that is, it will tremble, so it was described by what happens from it.
