أَوَلَمَّا أَصَابَتْكُم مُّصِيبَةٌ قَدْ أَصَبْتُم مِّثْلَيْهَا قُلْتُمْ أَنَّى هَذَا قُلْ هُوَ مِنْ عِندِ أَنْفُسِكُمْ إِنَّ اللّهَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ
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سورة آل عمران
(3/165) Is its that when a reverse hath befallen you, albeit ye had inflicted twice as much, ye say: whence is this? Say thou: it is but from yourselves verily Allah is over everything potent.
Surah Al Imran