2. Al-Baqara (The Cow)

Surah: 2   Aya: 225

225. La yu-akhithukumu Allahu biallaghwi fee aymanikum walakin yu-akhithukum bima kasabat quloobukum waAllahu ghafoorun haleemun
  

  Translation

225. Allâh will not call you to account for that which is unintentional in your oaths, but He will call you to account for that which your hearts have earned. And Allâh is Oft-Forgiving, Most-Forbearing.