Bukhari :: Book 8 :: Volume 75 :: Hadith 367
Narrated 'Abdullah bin Tha'laba bin Su'air:
whose eye Allah's Apostle had touched, that he had seen Sa'd bin Abi Waqqas offering one Rak'a only for the Witr prayer.
Source materials are from the University of Southern California MSA site|
Hadith eBooks converted from Imaan Star