Reference for Chullin 247:35

לא שנו אלא טלית אבל עור חשיב

Thereupon Resh Lakish said: This [teaching] applies only to a garment, but in the case of leather [what is left] is of value.<span class="x" onmousemove="('comment',' Even though it is only the size of an apron. Hence it is not rendered clean by 'the tearing, for it cannot be said to be destroyed for al use.');"><sup>16</sup></span>