Surah Al-Isra 17:32

وَلَا تَقْرَبُوا۟ ٱلزِّنَىٰٓ ۖ إِنَّهُۥ كَانَ فَـٰحِشَةً وَسَآءَ سَبِيلًا

And do not approach unlawful sexual intercourse. Indeed, it is ever an immorality and is evil as a way.

Translation: Saheeh International

Tafsir

And do not come anywhere near fornication — this form of expressing it is more effective than saying ‘Do not commit it’. It is indeed an indecency an abomination and it is an evil way.

Excerpt from Tafsir al-Jalalayn, commentary on 17:32, via Quran.com. The reader has the full commentary and 9 more tafsirs.