Sunan Abi Dawud, Hadith 1421 ⓘ
The aforesaid tradition has been transmitted by Abu Ishaq with the same chain and to the same effect. In the last of this tradition he said: The version has the words: "He would recite the supplication of the witr." He did not mention the words: "I say them in the witr." Abu Dawud said: The name of Abu al-Hawra' is Rabi'ah b. Shaiban.
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مُحَمَّدٍ النُّفَيْلِيُّ، حَدَّثَنَا زُهَيْرٌ، حَدَّثَنَا أَبُو إِسْحَاقَ، بِإِسْنَادِهِ وَمَعْنَاهُ قَالَ فِي آخِرِهِ قَالَ هَذَا يَقُولُ فِي الْوِتْرِ فِي الْقُنُوتِ وَلَمْ يَذْكُرْ أَقُولُهُنَّ فِي الْوِتْرِ . قَالَ أَبُو دَاوُدَ أَبُو الْحَوْرَاءِ رَبِيعَةُ بْنُ شَيْبَانَ .
also referenced under: Hadith 1426 (DarusSalam) & Book 8, Hadith 1421 (USC-MSA)