[1] Even if one did not nullify one’s ritual ablution (wudu), it would be permitted to wipe over one’s footgear (khuffs), as long as one wore them in a state of ritual ablution (wudu).
[2] It would be permitted to remove one’s footgear (khuffs) and then put them on again, as long as one puts them on in a state of ritual ablution (wudu).
Such that if Ahmad performs the ritual ablution (wudu) at 2pm; at 2.15pm, he puts on his footgear (khuffs); at 2.30pm, he removes his footgear (for some reason); and at 2.45pm, he nullifies his ritual ablution:
[i] It is a condition for the validity of wiping on his footgear (khuffs) that he wears the footgear in a state of complete ritual ablution (wudu); therefore, he would have to perform his ritual ablution (wudu) again before wearing his footgear (khuffs);
[ii] However, if he did not nullify his ritual ablution (wudu) at 2.45pm, it would be permitted to put them on again right away.
[3] It is not a condition for the validity of wiping over one’s footgear (khuffs) that one have previously nullified one’s ritual ablution (wudu).
[Shurunbulali, Maraqi al-Falah; `Ala al-DIn Abidin, al-Hadiyya al-`Ala’iyya]
And Allah knows best.
