Sayyiduna Jarir bin Abdullah (may Allah be pleased with him) said: "I only accepted Islam after Surah al-Ma'idah had been revealed, and I only saw the Messenger of Allah (peace and blessings be upon him) wiping (over leather socks) after I had accepted Islam."
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 2490