Muwatta Malik, Book 49, Hadith 1686 (In-Book) ⓘ
Yahya related to me from Malik that he had heard that Umar ibn al-Khattab and Ali ibn Abi Talib and Uthman ibn Affan drank while standing.
حَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عُمَرَ بْنَ الْخَطَّابِ، وَعَلِيَّ بْنَ أَبِي طَالِبٍ، وَعُثْمَانَ بْنَ عَفَّانَ، كَانُوا يَشْرَبُونَ قِيَامًا .
also referenced under: Book 49, Hadith 13 (USC-MSA)