as for the understanding, scholars have differed regarding whether tanning purifies or not. The majority hold the first opinion, and they have differed in their response to the ḥadīth of the chapter. The most correct statement is that the "ihāb" is the skin that has not been tanned, which is what is prohibited. Once it is tanned, it becomes pure. Whoever desires further details should refer to "Nayl al-Awṭār" and other sources.