Surah Al-Jathiyah 45:18

ثُمَّ جَعَلْنَـٰكَ عَلَىٰ شَرِيعَةٍ مِّنَ ٱلْأَمْرِ فَٱتَّبِعْهَا وَلَا تَتَّبِعْ أَهْوَآءَ ٱلَّذِينَ لَا يَعْلَمُونَ

Then We put you, [O Muḥammad], on an ordained way concerning the matter [of religion]; so follow it and do not follow the inclinations of those who do not know.

Translation: Saheeh International

Tafsir

Then We set you O Muhammad (s) upon a clear course a clear way of the commandment the commandment of religion; so follow it and do not follow the desires of those who do not know in worshipping other than God.

Excerpt from Tafsir al-Jalalayn, commentary on 45:18, via Quran.com. The reader has the full commentary and 9 more tafsirs.