Shmita Sources
וְשֵׁ֥שׁ שָׁנִ֖ים תִּזְרַ֣ע אֶת־אַרְצֶ֑ךָ וְאָסַפְתָּ֖ אֶת־תְּבוּאָתָֽהּ׃ וְהַשְּׁבִיעִ֞ת תִּשְׁמְטֶ֣נָּה וּנְטַשְׁתָּ֗הּ וְאָֽכְלוּ֙ אֶבְיֹנֵ֣י עַמֶּ֔ךָ וְיִתְרָ֕ם תֹּאכַ֖ל חַיַּ֣ת הַשָּׂדֶ֑ה כֵּֽן־תַּעֲשֶׂ֥ה לְכַרְמְךָ֖ לְזֵיתֶֽךָ׃
Six years you shall sow your land and gather in its yield; but in the seventh you shall let it rest and lie fallow. Let the needy among your people eat of it, and what they leave let the wild beasts eat. You shall do the same with your vineyards and your olive groves.
דַּבֵּ֞ר אֶל־בְּנֵ֤י יִשְׂרָאֵל֙ וְאָמַרְתָּ֣ אֲלֵהֶ֔ם כִּ֤י תָבֹ֙אוּ֙ אֶל־הָאָ֔רֶץ אֲשֶׁ֥ר אֲנִ֖י נֹתֵ֣ן לָכֶ֑ם וְשָׁבְתָ֣ה הָאָ֔רֶץ שַׁבָּ֖ת לַיהֹוָֽה׃
Speak to the Israelite people and say to them:
When you enter the land that I assign to you, the land shall observe a sabbath of the LORD.
אֵ֣ת סְפִ֤יחַ קְצִֽירְךָ֙ לֹ֣א תִקְצ֔וֹר וְאֶת־עִנְּבֵ֥י נְזִירֶ֖ךָ לֹ֣א תִבְצֹ֑ר שְׁנַ֥ת שַׁבָּת֖וֹן יִהְיֶ֥ה לָאָֽרֶץ׃
You shall not reap the aftergrowth of your harvest or gather the grapes of your untrimmed vines; it shall be a year of complete rest for the land.
(כ) וְכִ֣י תֹאמְר֔וּ מַה־נֹּאכַ֖ל בַּשָּׁנָ֣ה הַשְּׁבִיעִ֑ת הֵ֚ן לֹ֣א נִזְרָ֔ע וְלֹ֥א נֶאֱסֹ֖ף אֶת־תְּבוּאָתֵֽנוּ׃ (כא) וְצִוִּ֤יתִי אֶת־בִּרְכָתִי֙ לָכֶ֔ם בַּשָּׁנָ֖ה הַשִּׁשִּׁ֑ית וְעָשָׂת֙ אֶת־הַתְּבוּאָ֔ה לִשְׁלֹ֖שׁ הַשָּׁנִֽים׃
(20) And should you ask, “What are we to eat in the seventh year, if we may neither sow nor gather in our crops?” (21) I will ordain My blessing for you in the sixth year, so that it shall yield a crop sufficient for three years.
מִצְוַת עֲשֵׂה לְהַשְׁמִיט כָּל מַה שֶּׁתּוֹצִיא הָאָרֶץ בַּשְּׁבִיעִית שֶׁנֶּאֱמַר (שמות כג יא) "וְהַשְּׁבִיעִת תִּשְׁמְטֶנָּה וּנְטַשְׁתָּהּ". וְכָל הַנּוֹעֵל כַּרְמוֹ אוֹ סָג שָׂדֵהוּ בַּשְּׁבִיעִית בִּטֵּל מִצְוַת עֲשֵׂה. וְכֵן אִם אָסַף כָּל פֵּרוֹתָיו לְתוֹךְ בֵּיתוֹ. אֶלָּא יַפְקִיר הַכּל וְיַד הַכּל שָׁוִין בְּכָל מָקוֹם שֶׁנֶּאֱמַר (שמות כג יא) "וְאָכְלוּ אֶבְיֹנֵי עַמֶּךָ". וְיֵשׁ לוֹ לְהָבִיא לְתוֹךְ בֵּיתוֹ מְעַט כְּדֶרֶךְ שֶׁמְּבִיאִין מִן הַהֶפְקֵר. חָמֵשׁ כַּדֵּי שֶׁמֶן חֲמִשָּׁה עָשָׂר כַּדֵּי יַיִן. וְאִם הֵבִיא יֶתֶר מִזֶּה מֻתָּר:
It is a positive commandment to annul [ownership of] everything that comes out of the ground in the seventh year as it says "and in the seventh [year], annul it and forsake it" and anyone who locks up his vineyard or fences in his field in the seventh year has violated a positive commandment, and similarly someone who harvest all his fruits and brings them inside. Rather everything should be seen as ownerless and everyone has equal claim as it says " and the destitute of your people will eat it." [The owner] may bring in small amounts the way one does from ownerless property e.g. five pitchers of oil or fifteen of wine and if he brought in more it is permitted.