The Limits of Ablution, Its Order and Reward

It is not permissible to wipe over a turban (Amamah), a cap (qalansuwah), or leather socks (khuffs) and stockings (jawrab) except in cases of necessity, such as during fear of an enemy or in snow where there is a risk to the feet. The leather socks can be treated like bandages, and one can wipe over them.