Lying is mentioned in the Quran in these verses:
[2:10] In their minds there is a disease. Consequently, God augments their disease. They have incurred a painful retribution for their lying.
[4:103] Once you complete your Contact Prayer (Salat), you shall remember God while standing, sitting, or lying down. Once the war is over, you shall observe the Contact Prayers (Salat); the Contact Prayers (Salat) are decreed for the believers at specific times.
[9:77] Consequently, He plagued them with hypocrisy in their hearts, till the day they meet Him. This is because they broke their promises to God, and because of their lying.
[24:7] The fifth oath shall be to incur God’s condemnation upon him, if he was lying.
To learn more, read the Quran in English.
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