Those who invoke not, with Allah, any other god, nor slay such life as Allah has made sacred except for just cause, nor commit fornication; - and any that does this (not only) meets punishment. Al-Furqan 25:68 ⧉
Tafsir:
Three sins have been mentioned in this verse—polytheism, the killing of a person without justification and adultery. These three forms of wrongdoing are great sins against God and His subjects. The sign of real faith in God is that a man abstains from them. Those who have indulged in these sins can save themselves from retribution by repentance, but for those who die without repenting and reforming, there will be severe punishment before God at God’s behest, which they will in no way be able to avoid.