English: The school of Rabbi Yishmael taught: We find that the fourteenth is called “first,” as it is said: “In the first [month], on the fourteenth day of the month.”
Type of Learning
Lexical identification: הָרִאשׁוֹן in this verse = the fourteenth of Nisan.
What Is Learned
Hashbasah is on the fourteenth, which Scripture itself calls “the first.”