Commentary for Shabbat 43:6
אמר אביי כל מילי דמר עביד כרב לבר מהני תלת דעביד כשמואל מדליקין מנר לנר ומתירין מבגד לבגד והלכה כרבי שמעון בגרירה דתניא רבי שמעון אומר גורר אדם מטה כסא וספסל ובלבד שלא יתכוין לעשות חריץ
of all is [the law relating to] blood.<span class="x" onmousemove="('comment',' As stated above: things taken for religious purposes must not be treated slightingly. ');"><sup>18</sup></span> It was stated: Rab said: One must not light from lamp to lamp;<span class="x" onmousemove="('comment',' One Hanukkah lamp must not be lit from another. Or, when a lamp with several branches is used, in accordance with the practice of the 'most zealous' (supra 21b; this too is the modern usage), one branch must not be lit from another. ');"><sup>19</sup></span> but Samuel maintained, You may light from lamp to lamp. Rab said: Fringes<span class="x" onmousemove="('comment',' V. Num. XV, 38. ');"><sup>20</sup></span> may not be detached<span class="x" onmousemove="('comment',' Lit.,'untied'. ');"><sup>21</sup></span>
Rashi on Shabbat
Tosafot on Shabbat
Rashi on Shabbat
Shulchan Arukh, Orach Chayim
One is allowed to untie ציצית from one טלית and to place them on another טלית; however, [to untie them] without placing them on another garment, that is not allowed. Rem"a: And this [prohibition of untying ציצית] applies specifically to a טלית [that belongs to] one who is obligated [to wear it], but it is permitted to untie the ציצית from a טלית of a dead person [without needing to place them on another garment.] (See Mordechi and Tosafot Shabbat 22a).