In the seventh month, on the first day of the month, you shall have a holy convocation; you shall do no laborious work. It shall be a day of teruah for you.
English: It was taught: Rav Acha bar Pappa said, the mitzvah of the day is in the musaf. Rav Tachlifa said, and the verse says so: “a day of teruah shall it be for you, and you shall make a burnt offering.”
Type of Learning
Priority of the additional offering on Rosh Hashanah.
What Is Learned
Musaf is the day’s defining sacrificial act alongside teruah.