The expiation (for the breached oath) is by {…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. 1549 But whoever cannot find [or afford] it – then a fast of three days [is required]… 1550 } (al-Mâ’idah 5: 89)
مَنْ نَذَرَ طَاعَةً، لَزِمَهُ فِعْلُهَا؛ لِقَوْلِ رَسُوْلِوَكَفَّارَتُهَا: "إِطْعَامُ عَشَرَةِ مَسَاكِينَ مِنْ أَوْسَطِ مَا تُطْعِمُونَ أَهْلِيكُمْ أَوْ كِسْوَتُهُمْ أَوْ تَحْرِيرُ رَقَبَةٍ ۖ فَمَن لَّمْ يَجِدْ فَصِيَامُ ثَلَاثَةِ أَيَّامٍ" [سورة المائدة: الآية 89]