לֹא־תְקַלֵּ֣ל חֵרֵ֔שׁ וְלִפְנֵ֣י עִוֵּ֔ר לֹ֥א תִתֵּ֖ן מִכְשֹׁ֑ל וְיָרֵ֥אתָ מֵּאֱלֹהֶ֖יךָ אֲנִ֥י יְהוָֽה׃
N’insulte pas un sourd, et ne place pas d’obstacle sur le chemin d’un aveugle: redoute ton Dieu! Je suis l’Éternel.
Or HaChaim
ואמרת אלהם לנפש לא יטמא בעמיו, "and say to them not to defile himself for the dead amongst his people." Why is the word ואמרת i.e. אמור ואמרת repeated? Our sages in Yevamot 114 as well as in Torat Kohanim offer a variety of commentaries on this. I believe that there is room for still other approaches not yet explored by our classical commentaries. We may do well to refer to what Maimonides wrote in chapter 3 of his treatise on the rules to be observed by mourners. This is what he wrote: "If someone deliberately defiles a priest and the priest co-operates of his own free will, the priest is subject to the corporal punishment of 39 lashes, whereas the person who initiated the defilement is guilty of transgressing the injunction not to place an obstacle in the path of a blind man (Leviticus 19,14). Neither Radbaz nor Maharik comment on this. The problem is whence does Maimonides get the ruling that the priest is liable to 39 lashes? Lechem Mishneh comments as follows: "Maimonides wrote in his treatise on kilayim that if someone dresses a fellow Jew in garments containing a mixture of wool and linen such a person is guilty of 39 lashes provided the person wearing this mixture is unaware of committing a sin." Kesseph Mishneh (Rabbi Joseph Karo) queries this ruling mentioning that the Rosh asked this question of the Rashba without receiving an answer. Perhaps Maimonides' source was Nazir 44 according to which the person who defiles a Nazir is not treated in the same way as the Nazir who became defiled as a result of that person's doing. This is based on Numbers 6,9: וטמא ראש נזרו which means that under normal circumstances the same guilt applies to the person causing the sin as to the one committing it. This is why Maimonides writes in chapter 5,20 of his treatise about the laws of the Nazirite that in this case if the Nazir himself was unaware of committing a sin neither he nor the person defiling him deliberately is subject to מלקות, corporal punishment. Maimonides quotes the verse in Numbers 6,9 as the basis for his ruling. He understands that verse to mean that culpability does not occur until the Nazirite himself defiles his head. This ruling appears incomprehensible. 1) Why should the Nazirite legislation not serve as a בנין אב, as a model for many other similar situations where two parties are involved in committing a sin, the first one being guilty of לפני עור לא תתן מכשול? Furthermore, the situation involving the Nazirite required a special verse to exclude culpability because I could have learned a קל וחומר from the situation in which he shaved his hair and is guilty. Seeing that defiling himself is a more serious sin than shaving off his hair, the Torah had to write a verse to tell us that even defiling himself does not carry the penalty of מלקות. If this is so, it follows that had it not been for this קל וחומר, I would not have needed to write a single verse to exclude the Nazirite's not being guilty of מלקות if someone had deliberately defiled him. In fact the query against Maimonides's ruling in chapter 3 of his treatise on the laws for mourners would have been still stronger!
German Commentary
weil sie der schändlichen Vermischung verdächtig sind. Da die Bestialität auch dem Heiden verboten ist, so darf der Jude keine Veranlassung bieten, dieses Verbrechen zu verüben, nach Lev. 19,14.
Bartenura
לא ימכור אדם פירותיו וכו' – for he transgresses (Leviticus 19:14): “[You shall not insult the deaf,] or place a stumbling block before the blind.”