If a man has two wives, the one beloved and the one hated, and they bear him sons, the beloved and the hated, and the firstborn son is the hated one’s—
English: “And they bear” — a child born by caesarean section is not a firstborn for inheritance. Why? Because it is written “and they bear” (ordinary birth).
On the daf / in context: The verb “ve-yaledu” implies a normal birth process. A yotzei dofen (caesarean birth) therefore does not receive the double portion of the firstborn for inheritance purposes, though other firstborn rules may differ.
Type of Learning
Derash on the ordinary force of “ve-yaledu.”
What Is Learned
A child born by caesarean section is not considered the firstborn for the purpose of the double inheritance portion.