وَإِذا أَذَقنَا النّاسَ رَحمَةً فَرِحوا بِها ۖ وَإِن تُصِبهُم سَيِّئَةٌ بِما قَدَّمَت أَيديهِم إِذا هُم يَقنَطونَ

When We let people taste mercy, they rejoice in it. But when adversity strikes them as a result of their actions, they fall into despair.