Sura 13 Ar-Ra'd (The Thunder), ayah 12

1. هُوَ الَّذِي يُرِيكُمُ الْبَرْقَ خَوْفًا وَطَمَعًا وَيُنْشِئُ السَّحَابَ الثِّقَالَ

   It is He who shows you lightening, (causing) fear and aspiration, and generates the heavy clouds.

   13:12

Translation: Saheeh International