Keeping in mind the correct sacrifice and the person who is offering it TB Zevakhim 4

An offering of a sacrifice must be performed for its own sake (leshma-לִשְמָהּ) meaning while bringing a sin offering a person cannot change the intention to bring a whole burnt offering during the course of the sacrifice. Today’s daf TB Zevakhim 4 calls this shenui kodesh, לְשִׁינּוּי קוֹדֶשׁ. We have previously learned that the sacrifice is still kosher, but becomes detached from the person offering it. He needs to replace it with another animal for the original intention.

An offering of the sacrifice must be performed for the sake of the same individual meaning while sacrificing a sin offering for Reuvan, the priest can’t mistakenly articulate now the sacrifice is for Shimon. The Gemara calls this shenui ba’alim, שִנּוּי בְעָלִים.

There are four different components for each sacrifice that should be done with the right kavanah, for its own sake and for the sake of the individual bringing the sacrifice. They are: 1, Shekhita (שְׁחִיטָה), proper slaughtering of the animal; 2, Kabbalat hadam (קָבָּלַת הַדָּם), collecting the blood into a bowl; 3, Holakha (הולָכָה), walking the blood to the altar; 4, Zerikah (זְרִיקָה), sprinkling the blood on the altar. Even when one begins the sacrifice with the wrong kavanah, the other components need to be done with the proper kavanah.

The Gemara shows that since each one of these four components of the sacrifice have a unique element, one cannot derive these halakhot of intention one from the other. Each component needs a proof text why shenui kodesh and shenui ba’alim would detach the sacrifice from the one offering it. The Gemara cites the verses where the rabbis learn one needs the proper intention for the sake of the sacrifice and for the sake of the individual bringing the sacrifice during each one of the four parts of a sacrifice.