وَلا تَتَّخِذوا أَيمانَكُم دَخَلًا بَينَكُم فَتَزِلَّ قَدَمٌ بَعدَ ثُبوتِها وَتَذوقُوا السّوءَ بِما صَدَدتُم عَن سَبيلِ اللَّهِ ۖ وَلَكُم عَذابٌ عَظيمٌ

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.