Fiqh-us-Sunnah Volume 1, Purification and Prayer, Fiqh 1.031A.

Section : Running water through one’s fingers and toes.

Ibn ‘Abbas said that when the Messenger of Allah performed ablution, he would run his fingers through his fingers and toes. (Related by “the five,” except Ahmad.) It is also related that it is preferable to remove jewellery, for example, rings, bracelets, and so on, while performing ablution. Even though these reports are not accepted as fully authentic, one must follow them, for they fall under the general category of completing and perfecting the ablution.