Num 18:24

כִּ֞י אֶת־מַעְשַׂ֣ר בְּנֵֽי־יִשְׂרָאֵ֗ל אֲשֶׁ֨ר יָרִ֤ימוּ לַֽיהוָה֙ תְּרוּמָ֔ה נָתַ֥תִּי לַלְוִיִּ֖ם לְנַחֲלָ֑ה עַל־כֵּן֙ אָמַ֣רְתִּי לָהֶ֔ם בְּתוֹךְ֙ בְּנֵ֣י יִשְׂרָאֵ֔ל לֹ֥א יִנְחֲל֖וּ נַחֲלָֽה׃ פ

For I have given to the Levites as their inheritance the tithe that the Israelites present to the LORD as a contribution. That is why I told them that they would not receive an inheritance among the Israelites.”