It is narrated from Amr bin al-Harith bin al-Mustaliq (may Allah be pleased with him) that he said: I set out with Abdullah bin Mas'ud (may Allah be pleased with him) towards Madinah, and for three days he did not take off his leather socks but kept wiping over them.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 1316