Halakhah for Pesachim 45:2
מאי טעמא דתנא קמא דכתיב ונטעתם ליחיד משמע לרבים לא משמע כתב רחמנא לכם להביא את הנטוע לרבים ורבי יהודה ונטעתם משמע בין לרבים בין ליחיד ולכם בין יחיד בין רבים משמע הוי רבוי אחר רבוי ואין רבוי אחר רבוי אלא למעט
Because it is written, 'and ye shall have planted;' [this] implies [a law] to the individual, but it does not imply [a law] for the public;<span class="x" onmousemove="('comment',' Since the public do not plant.');"><sup>1</sup></span> [therefore] the Merciful One wrote, 'unto you', to include what is planted for the public. While R'Judah [argues]: 'and ye shall have planted' implies [a law] both to the public and to the individual, and 'unto you' [too] implies both for the public and for the individual: thus it is an extension after an extension, and an extension after an extension has no [other significance] save to limit.<span class="x" onmousemove="('comment',' This is a principle of exegesis. Cf. the inverse principle of the English language: a double negative is a positive.');"><sup>2</sup></span>