Variantly: Slaughtering is being likened to selling, and selling, to slaughtering. Just as selling is outside his (the owner's) domain, so, slaughtering (to make him liable for "four and five" payment) must be outside his domain. Just as (he is liable for "four and five") by selling (only) when the animal may be eaten, so, by slaughtering. Just as by selling, (only) when benefit may be derived from it, so by slaughtering. Just as by slaughtering, (only) when he (the thief) cannot revoke (his theft), so, by selling, (when the owner has despaired of the return of the theft, so that the thief has "acquired" the beast.) Just as with slaughtering, all (of the animal is involved), so, with selling.