Sahl b. Abu Hathma has narrated this hadith through another chain of transmitters with a slight variation of words, but no mention has been made of the hitting by the she-camel.
Sahih Muslim Book 28, Hadith 3
← Previous Hadith Show regard for the greatness of the old, or he said: Let the eldest begin speaking. Then they (Huwayyisa and Muhayyisa) spoke about the matter of their companion (murder of their cousin, 'Abdullah b. Sahl). Thereupon Allah's Messenger (ﷺ) said: Let fifty (persons) among you take oath for levelling the charge (of murder) against a person amongst them, and he would be surrendered to you. They said: We have not witnessed this matter ourselves. How can we then take oath? He (the Holy Prophet) said: The Jews will exonerate themselves by the oaths of fifty of them. They said: Messenger of Allah, they are non-believing people. Thereupon Allah's Messenger (ﷺ) paid the blood wit for him. Sahl said: As one day I entered the fold a she-camel amongst those camels hit me with its leg.

Sahih Muslim Book 28, Hadith 2 Next Hadith → This hadith has been narrated on the authority of Sahl b. Abu Hathma through another chain of transmitters.

Sahih Muslim Book 28, Hadith 4