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. (ID)
App reference (ID): Book 8, Hadith 34 (ID)
USC-MSA web (English) reference: Book 8, Hadith 34 (ID)
Arabic reference (ID): Book 8, Hadith 323 (ID)