Does It Count as a Khuff If You Put On Multiple Socks?

Thank you for your question. Putting on multiple socks doesn’t count as adding up to the thickness required for a khuff (footgear meant to be wiped over). A khuff must independently fulfill the requirements of being a khuff on its own, whether other socks are worn underneath or not.

It says in the Reliance of the Traveller:

e6.4 The conditions for the permissibility of wiping footgear are:
(a) that one have full ablution when one first puts them on;
(b) that they be free of filth;
(c) that they cover the whole foot up to and including the anklebones;
(d) that they prevent water (N: if dripped on them drop by drop from directly) reaching the foot (O:-if water reaches the foot through the holes of a seam’s stitches, it does not affect the validity of wiping them, though if water can reach the foot through any other place, it violates this condition);
(e) and that they be durable enough to keep walking around upon as travellers do in attending to their needs (O: when encamping, departing, etc.); -no matter whether they are of leather, felt, layers of rags (N: including thick, heavy wool socks that prevent water from reaching the foot (A: not modern dress socks (n: due to non-(d) and (e) above), which are not valid to wipe in any school, even if many are worn in layers)), wood, or other; nor whether they have a cleavage laced up with eyelets (O: provided none of the foot shows).
One may not wipe footgear if wearing just one of a pair, washing the other foot. Nor if any of the foot shows through a hole in them.

Please see these links as well:

May Allah give you the best of this world and the next.
[Ustada] Shazia Ahmad

Ustadha Shazia Ahmad lived in Damascus, Syria for two years where she studied aqida, fiqh, tajweed, tafsir, and Arabic. She then attended the University of Texas at Austin, where she completed her Masters in Arabic. Afterward, she moved to Amman, Jordan where she studied fiqh, Arabic, and other sciences. She later moved back to Mississauga, Canada, where she lives with her family.