Yahya related to me from Malik that Ishaq ibn Abdullah ibn AbiTalha said, "Anas ibn Malik said, 'I saw Umar ibn al-Khattab when hewas the amir of Madina. Three patches were sewn between his shoulders,one patched over the other.' '' (IT)
USC-MSA web (English) reference: Book 48, Hadith 19 (IT)
Arabic reference (IT): Book 48, Hadith 1673 (IT)