Reference for Bekhorot 114:1

סבר לה כר"ש דאמר

he holds with the view of R'Simeon, who said: Offspring brought forth by means of the caesarean section is a genuine offspring,<span class="x" onmousemove="('comment',' The mother being unclean through the confinement and therefore it is eligible to enter the shed to be tithed, v. supra 47b.');">¹</span>

Jastrow

Jastrow