The Meaning of the Khuff and the Ruling on Wiping Over It and Over the Sock

You said that you read about the permissibility of wiping over the khuffayn (leather socks). What is the description of the khuff, and what is the manner and timing of the wiping? Does this apply to socks, even if they are thin?
Answer: The khuff is what is made of leather for the feet, covering the feet. It is called a khuff; it covers the foot and the heels. This is what is called a khuff. The Muslim wipes over it for three days and nights if he is traveling, and for one day and night if he is resident. The woman is the same: if she is resident, it is one day and night; if she is traveling, it is three days and nights. The ruling for the sock is the same as the ruling for the khuff. If the sock is made of cotton, wool, or something else, and it covers the feet, then it is wiped over like the khuff: one day and night for the resident, and three days for the traveler, on the condition that it is covering. As for if it is transparent and does not cover, then it is not wiped over. The sock must be covering, like the khuff, for the man’s foot and heels. The wiping is for one day and night for the resident, starting from the wiping after the state of ritual impurity (hadath). The day and night begin from the wiping after the hadath. For the traveler, it is three days and nights, starting from the wiping after the hadath. As for if he put them on, like putting on the khuffayn, in the afternoon and remained in a state of ritual purity through the 'Asr, Maghrib, and 'Isha' prayers, and did not break his purity until after 'Isha', then the period starts from the wiping after 'Isha'. If he wipes during the late-night prayer (tahajjud) or at the end of the night, it starts from the wiping after the hadath, and what passed before that is not counted. Yes.