Sahih Muslim · Hadith 6493
The Book Pertaining to the Merits of the Companions (Allah Be Pleased With Them) of the Holy Prophet - كتاب فضائل الصحابة رضى الله تعالى عنهم
حدثنا عبيد الله بن معاذ، حدثنا أبي، حدثنا شعبة، بهذا الإسناد وزاد قال شعبة بدأ بهذين لا أدري بأيهما بدأ .
Ubaidullah b. Mu'adh reported it on the authority of his father Shu'ba with the same chain of transmitters and he made this addition. He made a mention of these two names but I do not know whose name he mentioned first.
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).