Surah Az-Zumar 39:41

إِنَّآ أَنزَلْنَا عَلَيْكَ ٱلْكِتَـٰبَ لِلنَّاسِ بِٱلْحَقِّ ۖ فَمَنِ ٱهْتَدَىٰ فَلِنَفْسِهِۦ ۖ وَمَن ضَلَّ فَإِنَّمَا يَضِلُّ عَلَيْهَا ۖ وَمَآ أَنتَ عَلَيْهِم بِوَكِيلٍ

Indeed, We sent down to you the Book for the people in truth. So whoever is guided - it is for [the benefit of] his soul; and whoever goes astray only goes astray to its detriment. And you are not a manager [i.e., authority] over them.

Translation: Saheeh International

Tafsir

Truly We have revealed the Book to you for the sake of mankind with the truth bi’l-haqqi is semantically connected to anzalnā ‘We have revealed’. So whoever is guided then it his being guided is for the sake of his own soul and whoever goes astray goes astray only to the detriment thereof. …

Excerpt from Tafsir al-Jalalayn, commentary on 39:41, via Quran.com. The reader has the full commentary and 9 more tafsirs.