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Umar on Wealth: The Caliph laments when he finds treasure | Daily Hadith Online
Ibn Rajab reported: When the treasures of Khosrau were opened for Umar ibn al-Khattab, may Allah be pleased with him, he wept and he said, "Verily, the likes of this were never opened for people but that Allah made it a source of enmity between them." Source: Kashf al-Kurbah 1/318 عن ابن رجب ولما فتحت كنوز كسرى على عمر بن الخطاب رضي الله عنه بكى فقال إن هذا لم يُفْتَح على قَوْمٍ قَطُّ إِلاَّ جَعَلَ اللَّهُ بَأْسَهُمْ بَيْنَهُمْ 1/318 كشف الكربة في وصف أهل الغربة