תלמוד על טהרות 4:12

It was stated: “Rebbi Jehudah said in the name of Rebbi Ṭarphon: None of them is a nazir since nezirut exists only by warning.”¹²⁸In the Babylonian sources, Babli 34a, Tosephta 3:19, “nezirut exists only by הפלאה ‘clear statement’ ”. The meaning is the same here; a legal warning for a breach of the vow could only be issued if the vow was clearly stated. That is what Rebbi Jehudah said, “doubtful nezirut is permitted.¹²⁹Mishnah Ṭahorot 4:12.”