the same genus, so it is estimated according to the amount of the replaced item, like the recitation of other than the Fatiha from the Quran as a substitute for the Fatiha; it must be equal to it. If the substitute were glorification (tasbih), it would not be estimated according to its amount. Wiping the leather sock (khuff) is a substitute for something of a different genus, as it is a substitute for washing, so it is not estimated by it, like [the act of] glorification as a substitute for the Quran. The Qadi said: It is sufficient to wipe a portion of it, as it is sufficient to wipe a portion of the leather sock, and this is specific to its folds (akwar), which are its coils, not its center. If one wipes its center alone, there are two viewpoints: one is that it suffices, [just as] it suffices to wipe a portion of its coils. The second is that it does not suffice, just as if one were to wipe the bottom of the leather sock.

Section: The time-limit for wiping over the turban is the same as the time-limit for wiping over the leather sock, based on what Abu Umamah reported, that the Prophet (may Allah bless him and grant him peace) said: "He wipes over the leather socks and the turban for three days while traveling, and for a day and a night for one who is resident." Al-Khallal narrated it with his chain of authority, although it is from the narration of Shahr ibn Hawshab. Furthermore, it is something wiped by way of concession, so it is time-limited by that, like the leather sock.

Section: A forbidden turban, such as a turban of silk or one that is usurped (maghsuba), may not be wiped upon, similar to what we mentioned regarding the usurped leather sock. If a woman wears a turban, it is not permissible to wipe upon it; [because she is prohibited from] imitating men, so it is forbidden in her case. If she has an excuse, this is rare, and thus the ruling is not tied to it.

Section: It is not permissible to wipe over a qalansuwa (skullcap or cap); Ahmad explicitly stated this. Harun said...