יב ומ"ש חלב דלוקה שתים בלא היקישא דכתב ביה תרי קראי כל חלב וכל דם לא תאכלו כל חלב שור וכשב דם נמי בלאו היקישא נילקי שתים דכתיב ביה תרי לאוין כל חלב וכל דם לא תאכלו (ויקרא ז, כו) וכל דם לא תאכלו בכל מושבותיכם לעוף ולבהמה
12 what is the purpose of the hekkesh? - It is required for what has been taught: 'Ye shall eat neither heleb nor blood'; just as heleb is singled out in that it is distinct from its flesh,<span class="x" onmousemove="('comment',' The law of heleb singles out a certain portion of the animal and forbids it for use, while the rest of the body is permitted.');"><sup>18</sup></span> and thus does not combine with the latter,<span class="x" onmousemove="('comment',' Viz., to make up the requisite quantity sc. of an olive-size. I.e.,if one eats a fraction of an olive of heleb and the supplementary fraction of flesh, one is not liable to lashes, for the flesh is not forbidden.');"><sup>19</sup></span> so also with blood, [it does not combine with the flesh] whenever it is distinct from its flesh,<span class="x" onmousemove="('comment',' Whereas the penalty of kareth attaches to the blood, the flesh of an unclean animal does not carry such a penalty, and consequently blood and flesh do not combine not even with regard to uncleanness.');"><sup>20</sup></span> to the exclusion of the blood of a reptile:<span class="x" onmousemove="('comment',' Which is not prohibited as blood but as part of the reptile, cf. infra 21b.');"><sup>21</sup></span>