But he shall acknowledge the firstborn, the son of the hated, by giving him a double portion of all that is found with him; for he is the first of his strength, the right of the firstborn is his.
English: “The first of his strength” — one born after stillbirths is still the firstborn for inheritance, for the verse says “the first of his strength”: one over whom the father’s heart grieves. This excludes a stillborn, over whom the heart does not grieve in the same way.
On the daf / in context: A viable child born after miscarriages or stillbirths is the firstborn for inheritance. Only a child who was a full “reishis ono” (one the father mourns) bars a later son from the status.
Type of Learning
Derash defining what counts as “reishis ono.”
What Is Learned
A son born after stillbirths is the firstborn for inheritance; only a prior viable child prevents the later son from receiving the double portion.