Consequences of Acting Without Authorization

لَّوْلَا كِتَـٰبٌ مِّنَ ٱللَّهِ سَبَقَ لَمَسَّكُمْ فِيمَآ أَخَذْتُمْ عَذَابٌ عَظِيمٌ

If not for a decree from Allāh that preceded, you would have been touched for what you took by a great punishment.