Yahya related to me from Malik from Rabia ibn Abi Abd ar-Rahmanthat Muhammad ibn Amr ibn Hazm used to pray in a single long shirt. (RU)
App reference (RU): Book 8, Hadith 34 (RU)
USC-MSA web (English) reference: Book 8, Hadith 34 (RU)
Arabic reference (RU): Book 8, Hadith 323 (RU)