Al Baqarah Ayah 225

لَّا يُؤَاخِذُكُمُ ٱللَّهُ بِٱللَّغْوِ فِىٓ أَيْمَـٰنِكُمْ وَلَـٰكِن يُؤَاخِذُكُم بِمَا كَسَبَتْ قُلُوبُكُمْ‌ۗ وَٱللَّهُ غَفُورٌ حَلِيمٌ ٢٢٥ Allah will not hold you accountable for unintentional oaths, but for what you intended in your hearts. And Allah is All-Forgiving, Most Forbearing.