This is the law of the Nazirite who vows his offering to the LORD for his separation, in addition to whatever else he can afford; he must fulfill whatever vow he makes, according to the law of his separation.”
Jewish Publication Society of America Version (JPS1917) - Numbers 6:21 >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.