Jami at-Tirmidhi 3095

Cited by the Christian side to argue that making lawful things unlawful, or unlawful things lawful, is defined as worshiping someone besides Allah, so Muhammad’s household prohibition would count as polytheistic by that standard.

Used by the Christian side to argue that Muhammad defined obeying religious authorities who declare Allah’s lawful things forbidden or forbidden things lawful as worship, setting up the claim that Muhammad fell under the same standard.

Cited to argue that Muhammad defined following religious authorities who permit what Allah forbade or forbid what Allah permitted as worship, framing the halal/haram issue at the center of the debate.

Cited to argue that Muhammad classified Christians and Jews as committing shirk by blindly following rabbis and monks on what is lawful or unlawful, even if they did not realize it.