Halakhah for Keritot 44:43
אם בספיקו עומד לעולם יהא אשם תלוי שממין שהביא על הודע מביאו על שלא הודע סוף סוף כי מתידע ליה בעי לאיתויי אשם ודאי
IF HE ATE THE ONE [PIECE] AND ANOTHER CAME AND ATE THE OTHER, EACH OF THEM IS LIABLE TO A SUSPENSIVE GUILT-OFFERING; THIS IS THE VIEW OF R'AKIBA.
Sefer HaChinukh
The commandment of a definite guilt-offering: To offer a sacrifice for well-known sins - that we will explain. And this sacrifice is called a definite guilt-offering. And it is a sacrifice of a ram that needs to be worth two sela (Keritot 22b). And there are some of these sins for which this sacrifice comes, that are whether he sinned inadvertently or whether volitionally; and there are some for which it only comes specifically for the inadvertent, but not for the volitional.
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