Reference for Nedarim 48:4

<big><strong>גמ׳</strong></big> תנא נדרי הבאי מותרין שבועות הבאי אסורין

<b><i>MISHNAH</i></b>. VOWS OF EXAGGERATION: WHEN ONE SAYS, 'KONAM IF I DID NOT SEE ON THIS ROAD AS MANY AS DEPARTED FROM EGYPT, OR 'IF I DID NOT SEE A SERPENT LIKE THE BEAM OF AN OLIVE PRESS.

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