Shuraih bin Hani (may Allah have mercy on him) says that I asked Lady Aisha Siddiqa (may Allah be pleased with her) a question regarding wiping over leather socks (khuffs), so she said: "You should ask this question to Sayyiduna Ali (may Allah be pleased with him), he has more knowledge about this issue because he used to accompany the Prophet (peace and blessings be upon him) during travels." So I asked Sayyiduna Ali (may Allah be pleased with him), and he said that the Prophet (peace and blessings be upon him) said: "For a traveler, it is permitted to wipe over the leather socks for three days and three nights, and for a resident, for one day and one night."