Surah An-Nahl, Verse 94

وَلَا تَتَّخِذُوٓاْ أَيۡمَٰنَكُمۡ دَخَلَۢا بَيۡنَكُمۡ فَتَزِلَّ قَدَمُۢ بَعۡدَ ثُبُوتِهَا وَتَذُوقُواْ ٱلسُّوٓءَ بِمَا صَدَدتُّمۡ عَن سَبِيلِ ٱللَّهِ وَلَكُمۡ عَذَابٌ عَظِيمٞ٩٤

walā tattakhidhū aymānakum dakhalan baynakum fatazilla qadamun baʿda thubūtihā watadhūqū l-sūa bimā ṣadadttum ʿan sabīli l-lahi walakum ʿadhābun ʿaẓīmun

And do not take your oaths as [means of] deceit between you, lest a foot slip after it was [once] firm, and you would taste evil [in this world] for what [people] you diverted from the way of Allāh, and you would have [in the Hereafter] a great punishment.