Reference for Eruvin 206:7

וליטעמיך לרבי אליעזר נמי לישקליה ניהליה ביד האי מאי אי אמרת בשלמא רבי אליעזר היינו דגזר יד אטו כלי אלא אי אמרת רבנן היא נשקליה ניהליה ביד ותו לא מידי:

for instance, that grew on his back or his elbows where he himself cannot remove it, if this, however represents the view of the Rabbis,<span class="x" onmousemove="('comment',' Whose main aim is to avoid the transgression of a Pentateuchal prohibition and to restrict the act of removal to a shebuth.');">¹⁹</span> why should he<span class="x" onmousemove="('comment',' The priest's fellow.');">²⁰</span> not be allowed to remove it with his hand,<span class="x" onmousemove="('comment',' Since in the removal by hand as by the teeth only a shebuth is involved.');">²¹</span> and this<span class="x" onmousemove="('comment',' From the mention of hand instead of teeth.');">²²</span>

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