Sayyiduna al-Mughirah bin Shu'bah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) wiped over his khuffs (leather socks), wiped the front part of his head, and placed his hand on the turban, or wiped over the turban.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 268