Reference for Niddah 47:9

בין ר' ינאי לר' יוחנן איכא בינייהו דר"א דאמר רבי אלעזר

is a ruling of R. Eleazar; for R. Eleazar ruled: If the haunch and its hollow were removed the animal is <i>nebelah</i>.<span class="x" onmousemove="('comment',' V. Glos. Hul. 21a, 32b. ');">⁹</span>

Jastrow