Study Yoma folio 43B with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
And R' Yehuda does not disagree. The Mishnah implies that even he agrees with the Mishnah’s ruling.
Abaye said: Since the Master, i.e., Ulla, said: In some stages, the conditions implied by the phrasing of the verse precludes the application of conditions that are implied by a previous verse describing a previous stage, whereas in other stages, the conditions implied by the phrasing of the verse
The Talmud expounds the next verse: “And the pure one shall sprinkle upon the impure” (Numbers 19:19). The previous verse already states that the one who sprinkles must be ritually pure. This requirement is repeated here to make the following inference: He is pure, which by inference suggests that
R' Asi said: When R' Yoḥanan and Reish Lakish analyzed the passage of the red heifer to try to identify a consistent pattern in the way the implied conditions should be understood, i.e., when they exist to preclude conditions implied in previous stages, and when they imply conditions that remain in
A tanna who would recite baraitot in the study hall recited a baraita before R' Yoḥanan: All slaughterings are valid if performed by a non-priest, except that of the red heifer. R' Yoḥanan said to him: Go out and teach that baraita outside the house of study, but not inside, as it is incorrect. We h