An-Nahl 16:92
وَلَا تَكُونُوا كَالَّتِي نَقَضَتْ غَزْلَهَا مِن بَعْدِ قُوَّةٍ أَنكَاثًا تَتَّخِذُونَ أَيْمَانَكُمْ دَخَلًا بَيْنَكُمْ أَن تَكُونَ أُمَّةٌ هِيَ أَرْبَىٰ مِنْ أُمَّةٍ ۚ إِنَّمَا يَبْلُوكُمُ اللَّهُ بِهِ ۚ وَلَيُبَيِّنَنَّ لَكُمْ يَوْمَ الْقِيَامَةِ مَا كُنتُمْ فِيهِ تَخْتَلِفُونَ ٩٢
Wala takoonoo kaallatee naqadat ghazlaha min baAAdi quwwatin ankathan tattakhithoona aymanakum dakhalan baynakum an takoona ommatun hiya arba min ommatin innama yablookumu Allahu bihi walayubayyinanna lakum yawma alqiyamati ma kuntum feehi takhtalifoona
“And be not like unto her who unravelleth the thread, after she hath made it strong, to thin filaments, making your oaths a deceit between you because of a nation being more numerous than (another) nation. Allah only trieth you thereby, and He verily will explain to you on the Day of Resurrection that wherein ye differed.” (16:92)