وَلَا تَتَّخِذُوْٓا اَيْمَانَكُمْ دَخَلًا ۢ بَيْنَكُمْ فَتَزِلَّ قَدَمٌۢ بَعْدَ ثُبُوْتِهَا وَتَذُوْقُوا السُّوْۤءَ بِمَا صَدَدْتُّمْ عَنْ سَبِيْلِ اللّٰهِ ۚوَلَكُمْ عَذَابٌ عَظِيْمٌ ( النحل: ٩٤ )
Wa laa tattakhizooo aimaanakum dakhalam bainakum ftazilla qadamum ba'da subootihaa wa tazooqus sooo'a bimmaa sadattum 'an sabeelil laahi wa lakum 'azaabun 'azeem (an-Naḥl 16:94)
Sahih International:
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 Allah, and you would have [in the Hereafter] a great punishment. (An-Nahl [16] : 94)
1 Mufti Taqi Usmani
Do not make your oaths a means of mischief among yourselves, lest a foot should slip after it is firmly placed, and you taste evil consequences for your having prevented (others) from the path of Allah, and you incur a great punishment.