Reference for Bekhorot 91:21

(שמות יג, יב) פטר רחם בישראל עד שיפטרו רחם מישראל

R'JOSE THE GALILEAN SAYS HOWEVER: [THE INFANT] IS A FIRST-BORN [WITH RESPECT] TO INHERITANCE AND ALSO ONE WHO MUST BE REDEEMED FROM A PRIEST, BECAUSE IT IS SAID IN THE SCRIPTURES: OPENETH THE WOMB AMONG THE CHILDREN OF ISRAEL,<span class="x" onmousemove="('comment',' Ex. XIII, 2.');">¹⁶</span>

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