He says: I performed wudu, then put on my socks. After a while, I took them off and put on another pair. When the time for the next prayer came, I performed wudu.

And I wiped over the socks only, without removing them and washing the feet—what is the ruling?

If he performed wudu and put on the socks, and his wudu was not invalidated,

and he remained in a state of wudu until he took off the socks, then put on another pair, and his wudu is still valid until now, then there is no problem; he may wipe over the second pair of socks.

But if his wudu was invalidated, then he took off the socks and put on another pair, he may not wipe over the socks.

The second opinion, and Allah knows best.