Qur'an 3:165 · Aal-i-Imraan

أَوَلَمَّآ أَصَٰبَتْكُم مُّصِيبَةٌۭ قَدْ أَصَبْتُم مِّثْلَيْهَا قُلْتُمْ أَنَّىٰ هَٰذَا ۖ قُلْ هُوَ مِنْ عِندِ أَنفُسِكُمْ ۗ إِنَّ ٱللَّهَ عَلَىٰ كُلِّ شَىْءٍۢ قَدِيرٌۭ

(165) Why [is it that] when a [single] disaster struck you [on the day of Uḥud], although you had struck [the enemy in the battle of Badr] with one twice as great, you said, "From where is this?" Say, "It is from yourselves [i.e., due to your sin]." Indeed, Allāh is over all things competent.