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