One who slaughters the pesach-offering with chametz [in his possession] is in violation of a negative command;  R' Yehudah says: Also the daily offering.  R' Shimon says: [If one slaughters] the pesach-offering on the fourteenth under its own designation, he is liable, but [if] under some other designation, he is not liable; and for all other sacrifices, whether [slaughtered] for their own designation or under some other designation, he is exempt. [And if one slaughters the pesach] during the festival, under its own designation, he is exempt; under some other designation, he is liable; and for all other sacrifices, whether [slaughtered] under their own designations, or under some other designations, he is liable, except for a sin-offering which he slaughtered under some other designation.