A resident is in a state of valid Wudu when his 24-hour sock-wiping duration expires. What must he do to perform prayer?

Wiping over Leather Socks: Invalidators and Status Changes

• He must repeat his entire Wudu from the beginning.
• He must perform Tayammum.
• He must remove his socks and wash only his feet.
• He can pray without doing anything as long as his physical Wudu is not broken.