Is it correct to say that the beard falls under the category of proper conduct?

The questioner : Who says that letting the beard grow falls under the category of proper conduct?

The Shaykh : Those who say it falls under the category of proper conduct are in error; rather, it falls under the category of worship, because opposing the Jews, the Christians, the polytheists, and the disbelievers in general is a matter of worship. Moreover, it is established in Sahih Muslim that he said: And the fitrah (the innate natural disposition) is an act of worship, not a custom.