Yahya related to me from Malik that he had heard that Umar ibnal-Khattab and Ali ibn Abi Talib and Uthman ibn Affan drank whilestanding. (JA)
USC-MSA web (English) reference: Book 49, Hadith 13 (JA)
Arabic reference (JA): Book 49, Hadith 1686 (JA)