And you shall rejoice in your festival, you and your son and your daughter and your manservant and your maidservant and the Levi and the stranger and the orphan and the widow who are within your gates.
English: "And you shall rejoice" — it is said here "rejoicing" and it is said there "rejoicing"; just as the rejoicing spoken of there refers to shelamim, so the rejoicing spoken of here refers to shelamim.
On the daf / in context: The primary fulfillment of festival joy is the consumption of peace-offerings.
Type of Learning
Gezeirah shavah (Pesachim) — festival joy is expressed through shelamim.
What Is Learned
The mitzvah of rejoicing on the festival is fulfilled principally by eating the meat of shelamim.