Oaths are mentioned in the Quran in these verses:

[2:225] God does not hold you responsible for the mere utterance of oaths; He holds you responsible for your innermost intentions. God is Forgiver, Clement.

[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.

[9:12] If they violate their oaths after pledging to keep their covenants, and attack your religion, you may fight the leaders of paganism – you are no longer bound by your covenant with them – that they may refrain.

[16:91] You shall fulfill your covenant with God when you make such a covenant. You shall not violate the oaths after swearing (by God) to carry them out, for you have made God a guarantor for you. God knows everything you do.

[16:92] Do not be like the knitter who unravels her strong knitting into piles of flimsy yarn. This is your example if you abuse the oaths to take advantage of one another. Whether one group is larger than the other, God thus puts you to the test. He will surely show you on the Day of Resurrection everything you had disputed.

[16:93] Had God willed, He could have made you one congregation. But He sends astray whoever chooses to go astray, and He guides whoever wishes to be guided. You will surely be asked about everything you have done.

[16:94] Do not abuse the oaths among you, lest you slide back after having a strong foothold, then you incur misery. Such is the consequence of repelling from the path of God (by setting a bad example); you incur a terrible retribution.

[16:95] Do not sell your oaths short before God. What God possesses is far better for you, if you only knew.

[16:96] What you possess runs out, but what God possesses lasts forever. We will surely reward those who steadfastly persevere; we will recompense them for their righteous works.

[58:16] They used their oaths as a means of repelling from the path of God. Consequently, they have incurred a shameful retribution.

[66:2] God has decreed for you the laws dealing with your oaths. God is your Lord, and He is the Omniscient, Most Wise.

To learn more, read the Quran in English.

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