Num 9:14

וְכִֽי־יָג֨וּר אִתְּכֶ֜ם גֵּ֗ר וְעָ֤שָֽׂה פֶ֨סַח֙ לַֽיהוָ֔ה כְּחֻקַּ֥ת הַפֶּ֛סַח וּכְמִשְׁפָּט֖וֹ כֵּ֣ן יַעֲשֶׂ֑ה חֻקָּ֤ה אַחַת֙ יִהְיֶ֣ה לָכֶ֔ם וְלַגֵּ֖ר וּלְאֶזְרַ֥ח הָאָֽרֶץ׃ פ

If a foreigner dwelling among you wants to observe the Passover to the LORD, he is to do so according to the Passover statute and its ordinances. You are to apply the same statute to both the foreigner and the native of the land.’”