Are the bones of a dead animal impure (najas)?

Primary text

The bones of any dead animal are impure, whether it is an animal whose meat is permitted to be eaten or one whose meat is forbidden, such as an elephant. They are never purified. This is the view held by Malik, Al-Shafi'i, and Ishaq. The evidence supporting this is the verse stating the prohibition of consuming carrion (Qur'an 5:3), and the bone is considered part of the whole carcass, thus being prohibited. Since the elephant is not consumable, its bone is inherently impure. Regarding the Hadith where the Prophet (peace be upon him) commanded the purchase of ivory bracelets, Al-Khattabi stated that 'ivory' (aj) refers to the shell of a sea turtle, not bone.