Sahih al-Bukhari 6625
Allah's Messenger (ﷺ) also said:
"By Allah, if anyone of you insists on fulfilling an oath by 
which he may harm his family, he commits a greater sin in Allah's sight than that of dissolving his 
oath and making expiation for it."
فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏
"‏ وَاللَّهِ لأَنْ يَلِجَّ أَحَدُكُمْ بِيَمِينِهِ فِي أَهْلِهِ آثَمُ لَهُ عِنْدَ اللَّهِ مِنْ أَنْ يُعْطِيَ كَفَّارَتَهُ الَّتِي افْتَرَضَ اللَّهُ عَلَيْهِ ‏"‏‏.‏