Surah An-Nahl, ayah 94

وَلَا تَتَّخِذُوٓاْ أَيۡمَٰنَكُمۡ دَخَلَۢا بَيۡنَكُمۡ فَتَزِلَّ قَدَمُۢ بَعۡدَ ثُبُوتِهَا وَتَذُوقُواْ ٱلسُّوٓءَ بِمَا صَدَدتُّمۡ عَن سَبِيلِ ٱللَّهِ وَلَكُمۡ عَذَابٌ عَظِيمٞ ٩٤

Walā tattakhidhū aymānakum dakhalā baynakum fatazilla qadamu ba'da thubūtihā watadhūqus-sū'a bimā sadattum 'an sabīlillāhi walakum 'adhābun 'azīm

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,⁷¹⁴ and you would have [in the Hereafter] a great punishment.