Qur'an 45:18 · Al-Jaathiya

ثُمَّ جَعَلْنَٰكَ عَلَىٰ شَرِيعَةٍۢ مِّنَ ٱلْأَمْرِ فَٱتَّبِعْهَا وَلَا تَتَّبِعْ أَهْوَآءَ ٱلَّذِينَ لَا يَعْلَمُونَ

(18) 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.