Musannaf Ibn Abi Shaybah 1931 — Wiping over the leather socks

Yahya bin Abi Ishaq said: Sayyiduna Anas bin Malik (may Allah be pleased with him) was asked about wiping over leather socks, and he said: "Wipe over them." People asked: "Did you hear this ruling from the Prophet (peace and blessings be upon him)?" He said: "No. But I heard this ruling from Companions who were above suspicion; they used to say that even if one has urinated and defecated, one may still wipe over the leather socks."