Muwatta Malik 1683
موطأ مالك#1683Da'ifYahya 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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Salim al-HilaliMauquf Daif
In-book reference: 49:13