"There is no vow and no oath concerning that which one does not possess, nor to commit sin, nor to sever the ties of kinship."  

قَالَ رَسُولُ اللَّهِ ﷺ لاَ نَذْرَ وَلاَ يَمِينَ فِيمَا لاَ تَمْلِكُ وَلاَ فِي مَعْصِيَةٍ وَلاَ قَطِيعَةِ رَحِمٍ