Zevachim 14:9-10

Zevachim 14:9

All sacrifices that were sanctified and offered outside while private altars were prohibited violate both a positive commandment (to offer in the proper place) and a negative commandment (not to offer elsewhere), and one is liable to kareis (spiritual excision) because of them. If one sanctified a sacrifice while private altars were permitted and offered it outside while private altars were prohibited, he violates a positive and a negative commandment but is not liable to kareis. If one sanctified a sacrifice while private altars were prohibited and offered it outside while private altars were permitted, he violates a positive commandment but not a negative commandment.

Zevachim 14:10

The following sacrifices were brought in the Mishkan (Tabernacle): Those consecrated to the Mishkan, i.e., public offerings; private offerings could be brought on a private altar. Private offerings that were consecrated to the Mishkan had to be offered in the Mishkan but one wasn’t liable if he offered them on a private altar. Sacrifices offered on private altars differed those offered on the public altar in laying of the hands, slaughtering on the north side, sprinkling the blood on the corners (i.e., the two sprinklings that hit all four sides), waving and presenting flour offerings – though Rabbi Yehuda says that there were no flour offerings brought on private altars (nor on the altar of the Mishkan in Gilgal, Nov or Givon) – the need for a kohein, priestly garments, Temple vessels, a pleasing aroma, sprinkling blood above and below the red line, and washing hands and feet. Private altars and public altars are alike regarding eating within the prescribed time frame, burning the leftovers and the necessity for ritual purity.