וּֽבְגַלְּחוֹ֮ אֶת־רֹאשׁוֹ֒ וְֽ֠הָיָה מִקֵּ֨ץ יָמִ֤ים ׀ לַיָּמִים֙ אֲשֶׁ֣ר יְגַלֵּ֔חַ כִּֽי־כָבֵ֥ד עָלָ֖יו וְגִלְּח֑וֹ וְשָׁקַל֙ אֶת־שְׂעַ֣ר רֹאשׁ֔וֹ מָאתַ֥יִם שְׁקָלִ֖ים בְּאֶ֥בֶן הַמֶּֽלֶךְ׃
And when he polled his head—now it was at every year’s end that he polled it; because the hair was heavy on him, therefore he polled it—he weighed the hair of his head at two hundred shekels, after the king’s weight.
Mishnah Nazir
[If one says,] “Behold I am a nazir [to abstain] from grape seeds, or from grape skins, or from shaving, or from [contracting] ritual defilement,” he is a nazirite and all the regulations of naziriteship apply to him. [If one says,] “Behold, I shall be like Samson”, “like the son of Manoah”, “like the husband of Delilah, or “like the one who uprooted the doors of Gaza,” or “like the one whose eyes the Philistines put out,” he is a nazirite like Samson. What difference is there between a nazirite like Samson and a life-nazirite? A life-nazirite if his hair becomes burdensome, he may thin it with a razor and then offer three animal sacrifices. If he should he be ritually defiled, he must offer the sacrifice [prescribed] for defilement. The nazirite like Samson if his hair becomes burdensome, he may not thin it. And if he becomes ritually defiled, he does not offer the sacrifice [prescribed] for defilement.