הלכה על חולין 2:12

The rulings of the Talmud Yerushalmi are authoritative unless contradicted by the Talmud Bavli (Babylonian Talmud, see the Rosh to Chullin 2:6). Accordingly, the Rif, Rambam and Rosh must believe that the Bavli rejects this ruling of the Talmud Yerushalmi, as noted by the Agudat Eizov (cited in the Pitchei Teshuvah C.M. 426:2). Acharonim scour the Bavli for evidence that it rejects this ruling and cite a variety of sources (summarized in Teshuvot Tzitz Eliezer 9:45).