The father of Salim (may Allah be pleased with him) narrates from the Prophet (peace and blessings be upon him) regarding the muhrim (one in the state of ihram) that he (peace and blessings be upon him) said: "He should not wear khuffs (leather socks), except one who cannot find sandals; he should cut them so that they come below the ankles." (b) The jurist Abu al-Walid (may Allah have mercy on him) said: This hadith indicates that when a khuff does not cover the whole foot, it does not take the ruling of a khuff over which wiping is permitted.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 1348