Shurayh (may Allah have mercy on him) says that I asked Aisha (may Allah be pleased with her) about the ruling of wiping over leather socks, so she said: Go and ask Ali (may Allah be pleased with him) about this issue. I went to him, and he said: When we were on a journey, the Prophet (peace and blessings be upon him) used to command us to wipe over the leather socks.