Reference for Eruvin 163:7

דתניא א"ר יהודה משום ר"ט לעולם אין אחד מהן נזיר לפי שאין נזירות אלא להפלאה

- That<span class="x" onmousemove="('comment',' The ruling in the last mentioned Baraitha.');">⁹</span> is a view which R'Judah quoted in the name of R'Tarfon.<span class="x" onmousemove="('comment',' Not that of the Rabbis in the Mishnah cited whose view R. Judah in fact explained, and between whom and himself no difference of opinion exists.');">¹⁰</span>

Jastrow

Jastrow