Reference for Shabbat 204:8

אבל שופתא בקופינא דמרא דאין דרך בנין בכך אימא מודה ליה לשמואל ואי אשמעינן בהא בהא קאמר שמואל אבל בהנך תרתי אימא מודה ליה לרב צריכא

requires mortar too; whilst the top merely [requires] placing.<span class="x" onmousemove="('comment',' Without the meticulous care needed for the bottom row, since nothing was to go upon it. ');">¹⁴</span> <small>AND HE WHO CHISELS</small>. On what score is a chiseller culpable? — Rab said: On the score of building: while Samuel said: On the score of beating with a hammer.<span class="x" onmousemove="('comment',' This being the completion of the work, v. supra 75b. ');">¹⁵</span>

Jastrow

Jastrow