זֹ֣את תּוֹרַ֣ת הַנָּזִיר֮ אֲשֶׁ֣ר יִדֹּר֒ קָרְבָּנ֤וֹ לַֽיהוָה֙ עַל־נִזְר֔וֹ מִלְּבַ֖ד אֲשֶׁר־תַּשִּׂ֣יג יָד֑וֹ כְּפִ֤י נִדְרוֹ֙ אֲשֶׁ֣ר יִדֹּ֔ר כֵּ֣ן יַעֲשֶׂ֔ה עַ֖ל תּוֹרַ֥ת נִזְרֽוֹ׃ (פ)
This is the law of the Nazirite who voweth, and of his offering unto the LORD for his Naziriteship, beside that for which his means suffice; according to his vow which he voweth, so he must do after the law of his Naziriteship.
Read halakhic rulings (Jewish law) on Numbers 6:21: and classical halakhic sources.