35:16ל״ה:ט״ז
1 א

ואם בכלי ברזל הכהו. אֵין זֶה מְדַבֵּר בְּהוֹרֵג בְּשׁוֹגֵג הַסָּמוּךְ לוֹ, אֶלָּא בְּהוֹרֵג בְּמֵזִיד, וּבָא לְלַמֵּד שֶׁהַהוֹרֵג בְּכָל דָּבָר צָרִיךְ שֶׁיְּהֵא בוֹ שִׁעוּר כְּדֵי לְהָמִית, שֶׁנֶּאֱמַר בְּכֻלָּם "אֲשֶׁר יָמוּת בּוֹ", דִּמְתַּרְגְּמִינַן "דְּהִיא כְמִסַּת דִּימוּת בֵּיהּ", חוּץ מִן הַבַּרְזֶל, שֶׁגָּלוּי וְיָדוּעַ לִפְנֵי הַקָּבָּ"ה שֶׁהַבַּרְזֶל מֵמִית בְּכָל שֶׁהוּא, אֲפִלּוּ מַחַט, לְפִיכָךְ לֹא נָתְנָה בוֹ תּוֹרָה שִׁעוּר לִכְתֹּב בּוֹ אֲשֶׁר יָמוּת בּוֹ; וְאִם תֹּאמַר בְּהוֹרֵג בְּשׁוֹגֵג הַכָּתוּב מְדַבֵּר, הֲרֵי הוּא אוֹמֵר לְמַטָּה אוֹ בכל אבן אשר ימות בה בלא ראות וְגוֹ', לִמֵּד עַל הָאֲמוּרִים לְמַעְלָה שֶׁבְּהוֹרֵג בְּמֵזִיד הַכָּתוּב מְדַבֵּר:

ואם בכלי ברזל הכהו BUT IF HE SMOTE HIM WITH AN INSTRUMENT OF IRON — This is not speaking of one who kills inadvertently, who is mentioned near this (in the preceding verse), but of one who kills intentionally; and its purpose is to teach us that with whatever instrument one kills, it is necessary that it must have a size sufficient to cause death, because in the case of all of them (vv. 17, 18) it is said, אשר ימות “[an instrument] by which one may die”, the Hebrew of which we translate in the Targum by, “[an instrument] which is of such a size that one may die through it” — in the case of all, except in that of iron, because it is manifest and known to the Holy One, blessed be He, that iron kills whatever size it may be (however small it is), even a needle. Therefore the Torah does not assign a size to it by writing ,אשר ימות בה (Sifrei Bamidbar 160:3; Sanhedrin 76b). And if you say that Scripture is speaking of one who kills inadvertently, — but surely it says lower down, (v. 23) “Or with any stone, even though one may die by it, (even though it is large enough to kill him) seeing him not”, which certainly is by inadvertence. This proves as regards the cases mentioned before it, that Scripture is speaking of one who kills intentionally.