Reference for Kiddushin 65:18

אביי יהיב ידא לסבי רבא משדר שלוחיה רב נחמן משדר גוזאי אמר אי לאו תורה כמה נחמן בר אבא איכא בשוקא

where scholars are very common.<span class="x" onmousemove="('comment',' There are so many, and they are met with so frequently, that the inhabitants fail to shew them proper respect. [Rashi's text reads: who are familiar with the Rabbis.]');">²⁷</span> 'Issi B'Judah said: "Thou shalt rise up before the hoary head" implies even any hoary head.' R'Johanan said: The halachah is as Issi B'Judah.

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