Surah An-Nahl, ayah 92

وَلَا تَكُونُواْ كَٱلَّتِي نَقَضَتۡ غَزۡلَهَا مِنۢ بَعۡدِ قُوَّةٍ أَنكَٰثٗا تَتَّخِذُونَ أَيۡمَٰنَكُمۡ دَخَلَۢا بَيۡنَكُمۡ أَن تَكُونَ أُمَّةٌ هِيَ أَرۡبَىٰ مِنۡ أُمَّةٍۚ إِنَّمَا يَبۡلُوكُمُ ٱللَّهُ بِهِۦۚ وَلَيُبَيِّنَنَّ لَكُمۡ يَوۡمَ ٱلۡقِيَٰمَةِ مَا كُنتُمۡ فِيهِ تَخۡتَلِفُونَ ٩٢

Walā takūnū kallatī naqadat ghazlahā mim ba'di quwwatin ankāthan tattakhidhūna aymānakum dakhalā baynakum an takūna ummatun hiya arbā min ummatin innamā yablūkumullāhu bihī walayubayyinanna lakum yawmal-qiyāmati mā kuntum fīhi takhtalifūn

And do not be like she who untwisted her spun thread after it was strong [by] taking your oaths as [means of] deceit between you because one community is more plentiful [in number or wealth] than another community.⁷¹² Allāh only tries you thereby. And He will surely make clear to you on the Day of Resurrection that over which you used to differ.