Narrated 'Adi bin Hatim:
I came to the Prophet (ﷺ) while I had a cross of gold around my neck. He said: 'O 'Adi! Remove this idol from yourself!' And I heard him reciting from Surah Bara'ah: They took their rabbis and monks as lords besides Allah (9:31). He said: 'As for them, they did not worship them, but when they made something lawful for them, they considered it lawful, and when they made something unlawful for them, they considered it unlawful.'