Quran 5:90 — The Feast (Al-Ma'edah)

O you who believe, intoxicants, and gambling, and the altars of idols, and the games of chance are abominations of the devil; you shall avoid them, that you may succeed.

[5:89] GOD does not hold you responsible for the mere utterance of oaths; He holds you responsible for your actual intentions. If you violate an oath, you shall atone by feeding ten poor people from the same food you offer to your own family, or clothing them, or by freeing a slave. If you cannot afford this, then you shall fast three days. This is the atonement for violating the oaths that you swore to keep. You shall fulfill your oaths. GOD thus explains His revelations to you, that you may be appreciative.

[5:91] The devil wants to provoke animosity and hatred among you through intoxicants and gambling, and to distract you from remembering GOD, and from observing the Contact Prayers (Salat). Will you then refrain?