משנה אויף ויקרא 6:23

Similarly, he who went out of Jerusalem and remembered that he had holy meat with him: If he has passed Scopus, he burns it where he is; but if not, he returns and burns it in front of the Temple with the wood of the [altar] pile. And for what [quantity] must they return? Rabbi Meir says: for both when there is as much as an egg; Rabbi Judah says: for both, when there is as much as an olive; But the sages say: holy meat, when there is as much as an olive and chametz, when there is as much as an egg.

If [blood] which is to be sprinkled inside [the Sanctuary] was mixed with [blood] that is to be sprinkled outside, it must be poured out into the duct. If [the priest] sprinkled outside and then sprinkled inside, it is valid. [If he sprinkled] inside and then went back and sprinkled outside: Rabbi Akiva declares it unfit, But the sages declare it fit. For Rabbi Akiva says: all blood which entered the Sanctuary to make atonement is unfit; But the sages say: the hatat alone [is unfit]. R. Eliezer said: the asham too, for it says, “As is the hatat, so is the asham” (Leviticus 7:7).

If the blood of a hatat was received in two goblets and one of them went outside [the Temple courtyard], the inside one is fit. If one of them entered within [the Sanctuary]: Rabbi Yose the Galilean declares the outer one fit. The sages disqualify it. Rabbi Yose the Galilean: if the place where an intention [directed to it] disqualifies, i.e. without, you do not treat what is left [inside] as what went out; then the place where an intention [directed to it] does not disqualify, i.e. within, is it not logical that we do not treat what is left [outside] as what entered within? If it entered within to make atonement, even if he [the priest] did not make atonement, it is unfit, the words of Rabbi Eliezer. Rabbi Shimon said: [it is not unfit] unless he makes atonement. Rabbi Judah said: if he took it in unwittingly, it is fit. For all unfit blood which was put on the altar, the head plate [of the high priest] does not propitiate, save for the unclean, for the headplate propitiates for that which is unclean, but does not propitiate for what goes out.