We may slaughter neither into seas, nor into rivers, nor into vessels, but one may slaughter into a pool of water, or in a boat on top of vessels. We may not slaughter into a pit under any circumstances, but one may make a pit in his house in order that the blood should flow into it, but he may not do so in the street, so that he does not lend support to the practices of the sectarians.

[If] one slaughters [an animal] for the designation of an olah-offering, a shelamim-offering, a guilt-offering in case of doubt, a pesach-offering, [or] a thanksgiving offering, his slaughtering is invalid, but R’ Shimon declares it valid. [If] two hold a knife and slaughter, one for one of these designations and one for a legitimate purpose, their slaughtering is invalid. [If] one slaughters [an animal] for the designation of a sin-offering, a definite guilt-offering, a firstborn, an animal tithe, [or] a substitution, his slaughtering is valid. This is the general rule: Whatever can be brought as a vow or as a donative offering — [if] one slaughters for its designation, it is prohibited; but whatever cannot be brought for a vow or for a donative offering — [if] one slaughters for its designation, it is valid.