וְרֹאשָׁם֙ לֹ֣א יְגַלֵּ֔חוּ וּפֶ֖רַע לֹ֣א יְשַׁלֵּ֑חוּ כָּס֥וֹם יִכְסְמ֖וּ אֶת־רָאשֵׁיהֶֽם׃
Ils ne devront ni raser leur chevelure, ni la laisser croître inculte, ils devront la tailler.
Mishnah Nazir
All the substitutes for vows have the validity of vows. If one says, “I shall be [one]” he is a nazirite. “I shall be comely”, he is a nazirite. “A nazik”, “a naziah”, “a paziah”, he is a nazirite. [If one says,] “Behold I shall be like this one,” or “Behold I shall curl [my hair]” or “Behold, I shall tend [my hair]” or “Behold, I shall grow my hair long,” he is a nazirite. [If one says] “Behold, I shall [bring] birds [as offerings]” Rabbi Meir says he is a nazirite, but the sages say he is not a nazirite.