An-Nisaa 4:16

If two among you commit this [sin], chastise them. Then if they repent and mend their ways, leave them alone[14]. Indeed, Allah is Accepting of Repentance, Most Merciful.

[14] Scholars differed over whether "the two" refers to two of the same sex (i.e., homosexuals) or those of opposite sexes. In either case, later rulings outlined in the Sunnah have replaced this one.

And the two[171] who commit it [i.e., unlawful sexual intercourse] among you - punish [i.e., dishonor] them both. But if they repent and correct themselves, leave them alone. Indeed, Allāh is ever Accepting of Repentance and Merciful.

[171] Scholars differ over whether "the two" refers to two of the same sex (i.e., homosexuals) or those of opposite sexes. In either case, later rulings outlined in the sunnah have replaced this one.

16. And the two persons (man and woman) among you who commit illegal sexual intercourse, hurt them both.[5] And if they repent (promise Allâh that they will never repeat, i.e. commit illegal sexual intercourse and other similar sins) and do righteous good deeds, leave them alone. Surely, Allâh is Ever All-Forgiving (the One Who forgives and accepts repentance), (and He is) Most Merciful.

[5] (V.4:16) See (V.24:2).

And as for the two of you who are guilty thereof, punish them both. And if they repent and improve, then let them be. Lo! Allah is ever relenting, Merciful.