Muwatta Malik 274
موطأ مالك#274SahihYahya related to me from Malik from Ibn Shihab that Sad ibn Abi Waqqas used to pray witr after isha with one raka. Malik said, "This is not the situation with us. Rather three is the minimum for witr
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Salim al-HilaliMauquf Sahih
In-book reference: 7:21