Quran Al-Jathiyah 45:18
ثُمَّ جَعَلۡنَٰكَ عَلَىٰ شَرِيعَةٖ مِّنَ ٱلۡأَمۡرِ فَٱتَّبِعۡهَا وَلَا تَتَّبِعۡ أَهۡوَآءَ ٱلَّذِينَ لَا يَعۡلَمُونَ ١٨
Translation
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.