Sura al-Māʾidah 5:89

لَا يُؤَاخِذُكُمُ ٱللَّـهُ بِٱللَّغْوِ فِىٓ أَيْمَٰنِكُمْ وَلَٰكِن يُؤَاخِذُكُم بِمَا عَقَّدتُّمُ ٱلْأَيْمَٰنَ فَكَفَّٰرَتُهُۥٓ إِطْعَامُ عَشَرَةِ مَسَٰكِينَ مِنْ أَوْسَطِ مَا تُطْعِمُونَ أَهْلِيكُمْ أَوْ كِسْوَتُهُمْ أَوْ تَحْرِيرُ رَقَبَةٍ فَمَن لَّمْ يَجِدْ فَصِيَامُ ثَلَٰثَةِ أَيَّامٍ ذَٰلِكَ كَفَّٰرَةُ أَيْمَٰنِكُمْ إِذَا حَلَفْتُمْ وَٱحْفَظُوٓا۟ أَيْمَٰنَكُمْ كَذَٰلِكَ يُبَيِّنُ ٱللَّـهُ لَكُمْ ءَايَٰتِهِۦ لَعَلَّكُمْ تَشْكُرُونَ

lā yuʾākhidhukumu allāhu bil-laghwi fī aymānikum wa-lākin yuākhidhukum bi-mā ʿaqqadttumu l-aymāna fakaffāratuhu iṭʿāmu ʿasharati masākīna min awsaṭi mā tuṭʿimūna ahlīkum aw kiswatuhum aw taḥrīru raqabatin fa-man lam yajid fa-ṣiyāmu thalāthati ayyāmin dhālika kaffāratu aymānikum idhā ḥalaftum waḥfaẓū aymānakum ka-dhālika yubayyinu allāhu la-kum āyātihi la-ʿallakum tashkurūna

Allah will not call you to account for what is futile in your oaths, but He will call you to account for your deliberate oaths: for expiation, feed ten indigent persons, on a scale of the average for the food of your families; or clothe them; or give a slave his freedom. If that is beyond your means, fast for three days. That is the expiation for the oaths ye have sworn. But keep to your oaths. Thus doth Allah make clear to you His signs, that ye may be grateful.