Yahya related to me from Malik from Ishaq ibn Abdullah ibn AbiTalha that Anas ibn Malik said, "I saw Umar ibn al-Khattab when he wasamir al-muminin being given a sa of dates, and he ate all of them,even the inferior ones."
USC-MSA web (English) reference: Book 49, Hadith 30
Arabic reference: Book 49, Hadith 1703