Commentary for Shabbat 50:1
ואין לה פדיון ואסורה לזרים הנך נפישן
, [iii] it cannot be redeemed [<i>Pidyon</i>], and [iv] it is forbidden to<i> Zarim</i>?<span class="x" onmousemove="('comment',' For Zar, pl. Zarim, v. Glos. (i) If a zar or an unclean priest eats terumah, he is liable to Death at the hand of heaven; (ii) if a zar eats it unwittingly, he must restore it and add a fifth; (iii) under no circumstances can terumah be redeemed and converted to hullin, whereas kodesh can be redeemed if it is blemished; and finally (iv), it is always forbidden to zarim. But certain sacrifices (kodesh) are permitted to zarim after the sprinkling of the blood, e.g., the thanksgiving and the peace-offerings. ');"><sup>1</sup></span> The former are more numerous. Alternatively, <i>kodesh</i> is more stringent, since it involves the penalty of <i>kareth</i>. R. Nahman b. Isaac said: Scripture saith, [<i>The firstfruits of thy corn, of thy wine, and of thine oil …] shalt thou give</i> to him:<span class="x" onmousemove="('comment',' Deut. XVIII, 4. ');"><sup>2</sup></span> <i>to 'him'</i>, but not for its light;<span class="x" onmousemove="('comment',' I.e., the priest must be able to use it himself, and not have to burn it for its heat or light. Hence defiled corn, etc., which may not be eaten as terumah, may not be separated as terumah for undefiled corn. ');"><sup>3</sup></span>