45:18
ثُمَّ جَعَلْنَـٰكَ عَلَىٰ شَرِيعَةٍ مِّنَ ٱلْأَمْرِ فَٱتَّبِعْهَا وَلَا تَتَّبِعْ أَهْوَآءَ ٱلَّذِينَ لَا يَعْلَمُونَ
thumma jaʿalnāka ʿalā sharīʿatin mina l-amri fa-ittabiʿ'hā walā tattabiʿ ahwāa alladhīna lā yaʿlamūna
Now We have set you [Muhammad] on a clear religious path, so follow it. Do not follow the desires of those who lack [true] knowledge-
Then We have put you (O Muhammad صلى الله عليه و سلم) on a (plain) way of (Our) commandment [like the one which We commanded Our Messengers before you (i.e. legal ways and laws of the Islâmic Monotheism)]. So follow you that (Islâmic Monotheism and its laws), and follow not the desires of those who know not. (Tafsir At-Tabarî).