Quran 39:22 — The Throngs (Al-Zumar)

If GOD renders one's heart content with Submission, he will be following a light from his Lord. Therefore, woe to those whose hearts are hardened against GOD's message; they have gone far astray.

[39:21] Do you not see that GOD sends down from the sky water, then places it into underground wells, then produces with it plants of various colors, then they grow until they turn yellow, then He turns them into hay? This should be a reminder for those who possess intelligence.

[39:23] GOD has revealed herein the best Hadith; a book that is consistent, and points out both ways (to Heaven and Hell). The skins of those who reverence their Lord cringe therefrom, then their skins and their hearts soften up for GOD's message. Such is GOD's guidance; He bestows it upon whomever He wills. As for those sent astray by GOD, nothing can guide them.