Kerisos 4:3-5:1
Krisos 4:3
Rabbi Shimon Shezuri and Rabbi Shimon say that Rabbi Eliezer and Rabbi Yehoshua don’t disagree about violations of the same type when one is liable. They only differ regarding violations of different types where Rabbi Eliezer obligates one to bring a sin offering and Rabbi Yehoshua exempts him. Rabbi Yehuda said that even if a person meant to pick figs but he ended up picking grapes, or vice versa, of if he meant to pick black figs but he ended up picking white figs, or vice versa – in all of these cases, Rabbi Eliezer obligates one to bring a sin offering and Rabbi Yehoshua exempts him. Rabbi Yehuda questioned whether Rabbi Yehoshua would actually exempt one in these cases, to which the mishna replies, “Why then does the Torah say ‘that he has sinned’ (Lev. 4:23)? In order to exclude acting absentmindedly.”
Krisos 5:1
One is liable for eating: the blood from slaughtering domesticated animals, wild animals or birds, whether kosher or non-kosher; blood from stabbing an animal; blood from tearing an animal; and blood from bloodletting an animal so that it dies. One is not liable for eating blood from the spleen, from the heart, from eggs, from fish, from locusts or blood that oozes out after the lifeblood has gushed. Rabbi Yehuda obligates one in the case of the blood that oozes out.