Ali 'Imran 3:165

أَوَلَمَّآ أَصَـٰبَتْكُم مُّصِيبَةٌ قَدْ أَصَبْتُم مِّثْلَيْهَا قُلْتُمْ أَنَّىٰ هَـٰذَا ۖ قُلْ هُوَ مِنْ عِندِ أَنفُسِكُمْ ۗ إِنَّ ٱللَّهَ عَلَىٰ كُلِّ شَىْءٍ قَدِيرٌ

Awalammā aṣābatkum muṣībatun qad aṣabtum mith'layhā qul'tum annā hādhā qul huwa min ʿindi anfusikum inna l-laha ʿalā kulli shayin qadīrun

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.