With distorted thinking, they may have been advocating regulations from the Law about foods and ritual cleanness.
وَكَانُوا يُجَاهِرُونَ بِرَأْيِهِمِ ٱلْمُخَالِفِ لِقَرَارِ ٱلْهَيْئَةِ ٱلْحَاكِمَةِ ،‏ ‹ مُعَلِّمِينَ مَا لَا يَنْبَغِي › .‏