The commandment of the matter of the impurity of the menstruant, that is impure and renders impure: That the menstruant be impure and render others impure, as it is stated (Leviticus 15:19), “and anyone who touches her shall be impure until the evening.”
We will write the root of the commandment and a little of its details — as per our custom — in the negative commandment of the menstruant in the Order of Acharei Mot (Sefer HaChinukh 207), with God’s help.
And [it] is practiced in every place and at all times. And one who transgresses it and does not act with her [according to her] impurity — and likewise if she, herself, acts [according to] the practice of purity (and not impurity) — has violated this positive commandment, besides the punishment that there is with it, as we shall write below with God’s help.
מִצְוַת עִנְיַן טֻמְאַת נִדָּה שֶׁטְּמֵאָה וּמְטַמְּאָה – לִהְיוֹת הַנִּדָּה טְמֵאָה וּמְטַמְּאָה אֲחֵרִים. שֶׁנֶּאֱמַר (ויקרא טו יט) וְכָל הַנֹּגֵעַ בָּהּ יִטְמָא עַד הָעָרֶב.
The commandment of the matter of the impurity of the menstruant, that is impure and renders impure: That the menstruant be impure and render others impure, as it is stated (Leviticus 15:19), “and anyone who touches her shall be impure until the evening.”
שֹׁרֶשׁ הַמִּצְוָה וּקְצָת פְּרָטֶיהָ, נִכְתֹּב כְּמִנְהָגֵנוּ בְּלָאו דְּנִדָּה בְּסֵדֶר אַחֲרֵי מוֹת (מצוה רז) בְּעֶזְרַת הַשֵּׁם.
We will write the root of the commandment and a little of its details — as per our custom — in the negative commandment of the menstruant in the Order of Acharei Mot (Sefer HaChinukh 207), with God’s help.
וְנוֹהֶגֶת בְּכָל מָקוֹם וּבְכָל זְמַן. וְהָעוֹבֵר עָלֶיהָ וְלֹא הִתְנַהֵג עִמָּהּ בְּטֻמְאָה, וְכֵן הִיא שֶׁנָּהֲגָה בְּעַצְמָהּ מִנְהַג טָהֳרָה בִּטֵּל עֲשֵׂה זֶה מִלְּבַד הָעֹנֶשׁ שֶׁיֵּשׁ בָּהּ, כְּמוֹ שֶׁנִּכְתֹּב לְמַטָּה בְּעֶזְרַת הַשֵּׁם.
And [it] is practiced in every place and at all times. And one who transgresses it and does not act with her [according to her] impurity — and likewise if she, herself, acts [according to] the practice of purity (and not impurity) — has violated this positive commandment, besides the punishment that there is with it, as we shall write below with God’s help.