Negative commandment · Lo Ta’aseh #225 of 613
Not to reap crops that grow on their own in the Jubilee year in the same manner as in an ordinary year
שלא לקצור ספיחי יובל כשאר השנים
The verse · Vayikra 25:11
יוֹבֵל הִוא שְׁנַת הַחֲמִשִּׁים שָׁנָה תִּהְיֶה לָכֶם לֹא תִזְרָעוּ וְלֹא תִקְצְרוּ אֶת־סְפִיחֶיהָ וְלֹא תִבְצְרוּ אֶת־נְזִרֶיהָ
“A jubilee shall that fiftieth year be to you: you shall not sow, neither reap that which grows of itself in it, nor gather in it the grapes of thy undressed vine.”
The Rambam’s words
Not to reap crops that grow on their own in the Jubilee year in the same manner as in an ordinary year, as [Leviticus, ibid.] states: "Do not harvest the crops which grow on their own."
שלא לקצור ספיחי יובל כשאר השנים, שנאמר בו "לא תקצרו את ספיחיה" (ויקרא כה,יא).
Where in the Mishneh Torah
Hilchot Sabbatical Year and the Jubilee הלכות שמיטה ויובל