(Al-Jasiya ) 45 : 18
ثُمَّ جَعَلْنَاكَ عَلَىٰ شَرِيعَةٍ مِنَ الْأَمْرِ فَاتَّبِعْهَا وَلَا تَتَّبِعْ أَهْوَاءَ الَّذِينَ لَا يَعْلَمُونَ
Then We made you upon a code of conduct from Our Commands; then you follow It, and you do not follow the whims and wills of those who are not knowing.
“Command” is mentioned in 34 verses, such as 2: 109; 7: 54; and 16 is one of the 40 names of Adhikr. Whoever doesn’t follow It, which is the Knowledge, are the wrongdoers and ignorant, as explained in verses 33: 72–73. Through this verse, the Messenger and thereby the believers till the Last Day are commanded not to follow such Fujjar’s whims and wills. See explanation 18: 28; 28: 57; 33: 1, 48, and 60–61.