Surah Yusuf 12:106

وَمَا يُؤْمِنُ أَكْثَرُهُم بِٱللَّهِ إِلَّا وَهُم مُّشْرِكُونَ

And most of them believe not in Allāh except while they associate others with Him.

Translation: Saheeh International

Tafsir

And most of them do not believe in God such that they might affirm that He is the Creator and the Sustainer without ascribing partners to Him by worshipping idols; which is why when crying their ritual response to God they used to say ‘At Your service no partner have You save a partner that belongs to You; …

Excerpt from Tafsir al-Jalalayn, commentary on 12:106, via Quran.com. The reader has the full commentary and 9 more tafsirs.