Is the sweat of a disbeliever who feeds on impure things and does not guard against them impure, by analogy with the sweat of animals that feed on filth?

The sweat of a disbeliever is pure according to the preponderant opinion, because the impurity of a disbeliever is spiritual, not physical. This is what the evidence indicates: Allah the Almighty permitted the women of the People of the Book, and their sweat is not absent from their sleeping places. The Prophet, peace and blessings be upon him, performed ablution from the waterskin of a polytheist woman, ate from the sheep gifted to him by a Jewish woman, and from the cheese brought from the lands of the Christians. All these matters indicate the purity of the disbeliever.