Surah Al-Ma'idah 5:63

لَوْلَا يَنْهَىٰهُمُ ٱلرَّبَّـٰنِيُّونَ وَٱلْأَحْبَارُ عَن قَوْلِهِمُ ٱلْإِثْمَ وَأَكْلِهِمُ ٱلسُّحْتَ ۚ لَبِئْسَ مَا كَانُوا۟ يَصْنَعُونَ

Why do the rabbis and religious scholars not forbid them from saying what is sinful and devouring what is unlawful? How wretched is what they have been practicing.

Translation: Saheeh International

Tafsir

Why do the rabbis and the priests among them not forbid them from uttering sin calumny and consuming unlawful gain? Evil is what they have been doing in refraining from forbidding them.

Excerpt from Tafsir al-Jalalayn, commentary on 5:63, via Quran.com. The reader has the full commentary and 9 more tafsirs.