Reference for Bava Batra 186:15
<big><strong>גמ׳</strong></big> תאני רב קטינא רובע קטנית לסאה ועפרורית לא והאמר רבה בר חייא קטוספאה משמיה דרבה בורר צרור מגרנו של חברו
So long as the cloth was spread, guests entered. When the cloth was removed, no guests entered. <b><i>MISHNAH</i></b>. [IF] ONE SELLS FRUIT TO ANOTHER, [THE LATTER] MUST ACCEPT A QUARTER [OF A <i>KAB</i> OF] REFUSE FOR EVERY SE' AH. [IF HE SOLD HIM] FIGS, [THE BUYER] MUST ACCEPT TEN WORMY ONES FOR EVERY HUNDRED. [IF] A CELLAR OF WINE, HE MUST ACCEPT TEN [CASKS OF] PUNGENT [WINE] FOR EVERY HUNDRED. [IF] JUGS IN SHARON,<span class="x" onmousemove="('comment',' A place name, or 'in the plain'. ');"><sup>26</sup></span> HE MUST ACCEPT TEN BAD JUGS FOR EVERY HUNDRED. <b><i>GEMARA</i></b>. R. Kattina learned: A quarter [of a <i>kab</i>] of pulse for each <i>se'ah</i>.<span class="x" onmousemove="('comment',' R. Kattina is explaining the 'quarter of refuse' mentioned in our Mishnah. ');"><sup>27</sup></span> And [need he] not [accept] sandy matter? Surely Rabbah b. Hiyya of Kteshifon<span class="x" onmousemove="('comment',' On the Eastern bank of Tigris. ');"><sup>28</sup></span> said<span class="x" onmousemove="('comment',' Bezah 38b. ');"><sup>29</sup></span> in the name of Rabbah: [If a man] picks out a pebble<span class="x" onmousemove="('comment',' A pebble comes obviously under the category of sandy matter. ');"><sup>30</sup></span> from his neighbour's threshing-floor