וּבָ֣א הַלֵּוִ֡י כִּ֣י אֵֽין־לוֹ֩ חֵ֨לֶק וְנַחֲלָ֜ה עִמָּ֗ךְ וְ֠הַגֵּר וְהַיָּת֤וֹם וְהָֽאַלְמָנָה֙ אֲשֶׁ֣ר בִּשְׁעָרֶ֔יךָ וְאָכְל֖וּ וְשָׂבֵ֑עוּ לְמַ֤עַן יְבָרֶכְךָ֙ יְהוָ֣ה אֱלֹהֶ֔יךָ בְּכָל־מַעֲשֵׂ֥ה יָדְךָ֖ אֲשֶׁ֥ר תַּעֲשֶֽׂה׃ (ס)
And the Levite, because he hath no portion nor inheritance with thee, and the stranger, and the fatherless, and the widow, that are within thy gates, shall come, and shall eat and be satisfied; that the LORD thy God may bless thee in all the work of thy hand which thou doest.
Read halakhic rulings (Jewish law) on Deuteronomy 14:29: and classical halakhic sources.