Related for Shabbat 208:8
תנא כתב אות אחת והשלימה לספר ארג חוט אחד והשלימה לבגד חייב מאן תנא אמר רבא בר רב הונא ר' אליעזר היא דאמר אחת על האריג חייב רב אשי אמר אפילו תימא רבנן להשלים שאני
He was a fool, answered they, and proof cannot be adduced from fools.<span class="x" onmousemove="('comment',' His action was too unusual to furnish a criterion. ');"><sup>20</sup></span> IF ONE WRITES ONE LETTER NEAR [OTHER] WRITING. Who teaches this? — Said Rabbah son of R. Huna, It does not agree with R. Eliezer. For if [it agreed with] R. Eliezer, — surely he maintained, [for] one [thread] added to woven stuff, he is culpable.<span class="x" onmousemove="('comment',' V. infra 105a. The same principle applies here too. ');"><sup>21</sup></span> IF ONE WRITES UPON WRITING. Who teaches this? Said R. Hisda, It does not agree with R. Judah. For it was taught: If one had to write the [Divine] Name,<span class="x" onmousemove="('comment',' The Tetragrammaton; the reference is to a Scroll of the Law, in which the Tetragrammaton must be written with sacred intention. ');"><sup>22</sup></span>