Reference for Bekhorot 50:36

חופר עד שמגיע לסלע או לבתולה

Have they not heard what R'Hiyya B'Abba reported in the name of R'Johanan: The difference of opinion<span class="x" onmousemove="('comment',' The first Tanna quoted above and R. Jose differing in regard to living blemished sacrifices that became mixed up with others.');">¹⁸</span>

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