Reference for Shabbat 204:10
ת"ש
— Rab said: [He is liable] on account of building; while Samuel said: On account of beating with a hammer. Now, these are [all] necessary. For if we were informed of the first, [I would argue]: in that case Rab rules [so], because such is a mode of building;<span class="x" onmousemove="('comment',' Chiselling a stone to smooth it is an essential part of building. ');"><sup>18</sup></span> but if one makes a hole in a hen-coop, seeing that this is not a mode of building, I would maintain that he agrees with Samuel. And if we were informed of this [latter one only], — here does Rab rule [thus], because it is similar to a building, since it is made for ventilation; but [as for inserting] a pin through the eyelet of a spade, which is not a mode of building, I would say that he agrees with Samuel. And if we were told of this [latter one], only here does Samuel rule [thus], but in the former two I would maintain that he agrees with Samuel:<span class="x" onmousemove="('comment',' By reversing the former argument. ');"><sup>19</sup></span> [hence] they are necessary. R. Nathan b. Oshaia asked R. Johanan: On what grounds is a chiseller culpable? He intimated to him with his hand, On account of beating with a hammer. But we learnt, <small>HE WHO CHISELS AND HE WHO BEATS WITH A HAMMER?</small> — Say, <small>'HE WHO CHISELS, WHO BEATS WITH A HAMMER'.</small><span class="x" onmousemove="('comment',' The latter being explanatory of the former. ');"><sup>20</sup></span> Come and hear: