Quran 2:225 — The Heifer (Al-Baqarah)
GOD does not hold you responsible for the mere utterance of oaths; He holds you responsible for your innermost intentions. GOD is Forgiver, Clement.
[2:224] Do not subject GOD's name to your casual swearing, that you may appear righteous, pious, or to attain credibility among the people. GOD is Hearer, Knower.
[2:226] Those who intend to divorce their wives shall wait four months (cooling off); if they change their minds and reconcile, then GOD is Forgiver, Merciful.