‏الجهاد والسير‏ : Hadeeth No:4407 The same tradition has been narrated through a different chain of transmitters on the authority of A'mash. This version contains the words: Ila amrin yofzi'una instead of Ila amrin na'rifuhu....

‏فضائل الصحابة‏ : Hadeeth No:6078 This hadith has been reported on the authority of Shu'ba with the same chain of transmitters but with a slight variation of wording....