Tafseer Ibn Kathir of AL MUJAADILAH [16]

اتَّخَذُوا أَيْمَانَهُمْ جُنَّةً فَصَدُّوا عَن سَبِيلِ اللَّهِ فَلَهُمْ عَذَابٌ مُّهِينٌ

They took their [false] oaths as a cover, so they averted [people] from the way of Allah , and for them is a humiliating punishment.