Reference for Moed Katan 5:12
איתמר החורש בשביעית ר' יוחנן ור' אלעזר חד אמר לוקה וחד אמר אינו לוקה לימא בדר' אבין אמר רבי אילעא קמיפלגי דאמר רבי אבין אמר ר' אילעא כל מקום שנאמר כלל בעשה ופרט בלא תעשה אין דנין אותו בכלל ופרט וכלל
Surely [is it not taught]: It is writt But the seventh year thou shalt let it rest and lie fallow;<span class="x" onmousemove="('comment',' Ex. XXIII, 11.');"><sup>16</sup></span> 'let it rest' - not to hoe; and '[let it] lie fallo not to remove stones? - Said R''Ukba B'Haba, there are two sorts of hoeing, one for strengthening the [olive] tree, and another to close up fissures; that for strengthening the tree is forbidden, whereas that for closing up fissures is allowed.<span class="x" onmousemove="('comment',' The former is for enhancing profit and the latter is prevention of loss, namely, to save the tree from bleeding or rotting.');"><sup>17</sup></span> It has been stated:<span class="x" onmousemove="('comment',' The same question is again discussed from a different angle in Palestinian schools.');"><sup>18</sup></span>