Reference for Bava Batra 329:6

אמר אביי רשב"ג ור"ש ור' אלעזר כולהו סבירא להו מראה מקום הוא לו

Their dispute relates to a place where [both] plain and folded [deeds] are in use, and he said to [the scribe], 'Prepare for me a plain [deed],' and [the latter] prepared for him a folded [one]. [In such a case],<span class="x" onmousemove="('comment',' When the scribe did not carry out instructions but did not at the same time also deviate from the established local practice. ');">⁷</span> [one] master<span class="x" onmousemove="('comment',' The first Tanna. ');">⁸</span>

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