5:89
لَا يُؤَاخِذُ كُمُ ٱللَّهُ بِ ٱل لَّغْوِ فِىٓ أَيْمَٰنِ كُمْ وَ لَٰكِن يُؤَاخِذُ كُم بِ مَا عَقَّد تُّمُ ٱلْ أَيْمَٰنَ فَ كَفَّٰرَتُ هُۥٓ إِطْعَامُ عَشَرَةِ مَسَٰكِينَ مِنْ أَوْسَطِ مَا تُطْعِمُ ونَ أَهْلِي كُمْ أَوْ كِسْوَتُ هُمْ أَوْ تَحْرِيرُ رَقَبَةٍ فَ مَن لَّمْ يَجِدْ فَ صِيَامُ ثَلَٰثَةِ أَيَّامٍ ذَٰلِكَ كَفَّٰرَةُ أَيْمَٰنِ كُمْ إِذَا حَلَفْ تُمْ وَ ٱحْفَظُ وٓا۟ أَيْمَٰنَ كُمْ كَ ذَٰلِكَ يُبَيِّنُ ٱللَّهُ لَ كُمْ ءَايَٰتِ هِۦ لَعَلَّ كُمْ تَشْكُرُ ونَ
Allah will not impose blame upon you for what is meaningless in your oaths, but He will impose blame upon you for [breaking] what you intended of oaths. So its expiation is the feeding of ten needy people from the average of that which you feed your [own] families or clothing them or the freeing of a slave. But whoever cannot find [or afford it] - then a fast of three days [is required]. That is the expiation for oaths when you have sworn. But guard your oaths. Thus does Allah make clear to you His verses that you may be grateful.