Quran 2:225 from Surah Al-Baqara on Divine Marvels.
لَّا يُؤَاخِذُكُمُ ٱللَّهُ بِٱللَّغۡوِ فِيٓ أَيۡمَٰنِكُمۡ وَلَٰكِن يُؤَاخِذُكُم بِمَا كَسَبَتۡ قُلُوبُكُمۡۗ وَٱللَّهُ غَفُورٌ حَلِيمٞ
English translation: Not will take you to task Allah for (what is) unintentional in your oaths [and] but He takes you to task for what (have) earned your hearts And Allah (is) Oft-Forgiving Most Forbearing
Transliteration: la yuakhidhukumu al-lahu bil-laghwi fi aymanikum walakin yuakhidhukum bima kasabat qulubukum wal-lahu ghafurun halimun