وَلَا تَتَّخِذُوا أَيْمَانَكُمْ دَخَلًا بَيْنَكُمْ فَتَزِلَّ قَدَمٌ بَعْدَ ثُبُوتِهَا وَتَذُوقُوا السُّوءَ بِمَا صَدَدتُّمْ عَن سَبِيلِ اللَّهِ ۖ وَلَكُمْ عَذَابٌ عَظِيمٌ (94)
(16:94) And (O Muslims,) do not make your oaths the means of deceiving one another lest (someone's) foot should slip after being firmly fixed *95 and you may suffer the consequences of debarring other people from the Way of Allah, and undergo a severe torment.
*95) That is, "Someone,who might have been convinced of Islam, seeing your dishonest conduct should become disgusted and hold back from joining the Believers" .For he might argue like this: "As these Muslims are not much different from the disbelievers in their morals and dealings, there is no reason why I should join them. "