Purity: Wiping a Foot Partially Covered by a Jabirah
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 332:
If the jabīrah covers the entire surface of the top of the foot except for an area over the toes and at the top of the foot, one must wipe the places that are uncovered and over the jabīrah that is covering the other parts.
-Ayatullah Sistani, Practical Laws of Islam, Purification (Taharah)