Reference for Eruvin 197:19
<big><strong>גמ׳</strong></big> רישא רבנן וסיפא רבי מאיר
to reverse the statement,for we are dealing here with phlegm.<span class="x" onmousemove="('comment',' Which is detached from the lungs by the time it reaches the mouth.');"><sup>35</sup></span> But was it not taught: R'Judah ruled: 'If his phlegm was detached',<span class="x" onmousemove="('comment',' He must not walk beyond four cubits in the public domain.');"><sup>36</sup></span> which implies also, does it not, 'if his spittle was detached'?<span class="x" onmousemove="('comment',' The text is in disorder. Read (v. D.S.) : 'R. Judah said, (the same applies to) his phlegm or spittle'; now does this not mean if his phlegm or spittle was detached?- No, only if his phlegm was detached (but as to spittle, there is no liability unless he turned it over) ].');"><sup>37</sup></span>