This hadith has been narrated through another chain of transmitters with a slight variation of words.
Sahih Muslim Book 27, Hadith 75
← Previous Hadith He who gives up his share in a slave, and he has money enough to meet the full price, a fair price for him should be fixed; otherwise be has emancipated him to the extent that he has emancipated.

Sahih Muslim Book 27, Hadith 74 Next Hadith → He who emancipates a slave (shared) by him and another one, his full price may be justly assessed from his wealth, neither less nor more, and he (the slave) would be emancipated if he (the partner) would be solvent enough (to forgo the amount of his share).

Sahih Muslim Book 27, Hadith 76