لَّا يُؤَاخِذُكُمُ اللَّهُ بِاللَّغْوِ فِي أَيْمَانِكُمْ وَلَٰكِن يُؤَاخِذُكُم بِمَا كَسَبَتْ قُلُوبُكُمْ ۗ وَاللَّهُ غَفُورٌ حَلِيمٌ (225)
(2:225) Allah hears everything you utter and knows everything. Allah does not call you to Account for unintentional and meaningless oaths, *244 but will surely take you to task for oaths taken deliberately and in earnest : Allah is Forgiving and Forbearing.
*244). This refers to oaths which one utters either through habit or without any intent and purpose. The breach of such vows neither entails expiation nor makes man liable to God's reproach.