Reference for Menachot 74:17
תרגומה רב בר שבא קמיה דרב כהנא
We have also learnt:<span class="x" onmousemove="('comment',' Kel. XXVI, 4.');"><sup>21</sup></span> Water-skins that [have been pierced and] have been tied up again are not susceptible to uncleanness,<span class="x" onmousemove="('comment',' Since the knot is only temporary and will be untied, the water-skin is regarded even now as a pierced vessel, and is therefore not susceptible to uncleanness.');"><sup>22</sup></span> excepting those tied up with an Arab knot.<span class="x" onmousemove="('comment',' For these remain so permanently.');"><sup>23</sup></span> R'Dimi of Nehardea said, If a man sewed together [the folded corners of] his garment,<span class="x" onmousemove="('comment',' V. supra n. 4.');"><sup>24</sup></span> he has gained nothing, for if he has no use for the corners he should cut them off and throw them away.<span class="x" onmousemove="('comment',' But as long as the corners are not cut off the garment must be provided with fringes.');"><sup>25</sup></span> R'ISHMAEL SAYS, THE FOUR ARE FOUR SEPARATE PRECEPTS. Rab Judah said in Samuel's name that the halachah agrees with R'Ishmael.<span class="x" onmousemove="('comment',' With all the practical results that follow from that view, as stated above.');"><sup>26</sup></span> The halachah, however, is not in accordance with him. Rabina was once walking behind Mar son of R'Ashi [in the street] on one of the Sabbaths preceding the Festival,<span class="x" onmousemove="('comment',' For it was usual to preach on the laws of the Festival four Sabbaths before the Festival. V. Pes. 6a.');"><sup>27</sup></span> when suddenly a corner of [Mar's] garment with its fringe had torn away, but Rabina told him nothing about it. When he came home and Rabina told him that it had torn away there [in the street], he said, 'Had you told me of it I should then and there have cast it off'.<span class="x" onmousemove="('comment',' For since the garment was not now properly provided with fringes (R. Ishmael's view not being accepted as law) it is regarded as an unnecessary burden carried on the Sabbath.');"><sup>28</sup></span> But has not a Master said, Great is the dignity of man since it overrides a negative precept of the Torah?<span class="x" onmousemove="('comment',' And as it would be undignified for a man of his eminence to remove his garment in the street he is permitted to carry it on the Sabbath.');"><sup>29</sup></span> - Rab B'Shabba explained it before R'Kahana