Reference for Shabbat 120:13

א"ר ששת חיפהו כולו במסמרות כדי שלא תהא קרקע אוכלתו מותר

As for R. Hanina, It Is well: he rules as R. Nathan. But whose view does R. Johanan state? — He rules as R. Nehorai. For it was taught, R. Nehorai said: Five are permitted, but seven are forbidden. Efah said to Rabbah b. Bar Hanah: You, as disciples of R. Johanan, should act as R. Johanan; but we will act as R. Hanina.

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