Reference for Gittin 142:10

<big><strong>גמ׳</strong></big> טעמא דלא אמר תנו הא אמר תנו נותנין מני ר"מ היא דאמר מילי מימסרן לשליח

What is meant by never'? Surely it means, even if he can signify his intention in writing? — R. Papa said: But for the statement of R. Johanan, I would have said that R. Simeon b. Gamaliel intended only to explain the statement of the previous Tanna, and that 'never' means, 'even though we see that he is intelligent'.<span class="x" onmousemove="('comment',' But not, 'even though he can write', so that this Mishnah would not differ from R. Simeon. ');">⁹</span>

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