Surah Al-Munafiqun 63:2

ٱتَّخَذُوٓا۟ أَيْمَـٰنَهُمْ جُنَّةً فَصَدُّوا۟ عَن سَبِيلِ ٱللَّهِ ۚ إِنَّهُمْ سَآءَ مَا كَانُوا۟ يَعْمَلُونَ

They have taken their oaths as a cover, so they averted [people] from the way of Allāh. Indeed, it was evil that they were doing.

Translation: Saheeh International

Tafsir

They have taken their oaths as a shield as a means of protection for their possessions and their lives and so they have barred thereby from the way of God that is from using them for the struggle. Evil indeed is that which they are wont to do.

Excerpt from Tafsir al-Jalalayn, commentary on 63:2, via Quran.com. The reader has the full commentary and 9 more tafsirs.