Leviticus — Prohibition of Chadash
Leviticus 23:14
The Torah prohibits eating 'lechem v'kali v'carmel' (bread, parched grain, and fresh grain) until the omer offering is brought. This verse is the biblical backdrop for discussions about which grains are biblically restricted on Pesach.
וְלֶ֩חֶם֩ וְקָלִ֨י וְכַרְמֶ֜ל לֹ֣א תֹֽאכְל֗וּ עַד־עֶ֙צֶם֙ הַיּ֣וֹם הַזֶּ֔ה עַ֚ד הֲבִ֣יאֲכֶ֔ם אֶת־קׇרְבַּ֖ן אֱלֹהֵיכֶ֑ם חֻקַּ֤ת עוֹלָם֙ לְדֹרֹ֣תֵיכֶ֔ם בְּכֹ֖ל מֹשְׁבֹֽתֵיכֶֽם׃ {ס}
Until that very day, until you have brought the offering of your God, you shall eat no bread or parched grain or fresh ears; it is a law for all time throughout the ages in all your settlements.