שֶׁלֹּא יֵרָאֶה לָנוּ חָמֵץ בְּפֶסַח – שֶׁלֹּא יֵרָאֶה חָמֵץ בְּכָל מוֹשְׁבוֹתֵינוּ כָּל שִׁבְעַת יְמֵי הַפֶּסַח, שֶׁנֶּאֱמַר (שמות יג ז) וְלֹא יֵרָאֶה לְךָ חָמֵץ וְלֹא יֵרָאֶה לְךָ שְׂאֹר בְּכָל גְּבֻלְךָ שִׁבְעַת יָמִים. וְאֵין אֵלֶּה שְׁנֵי לָאוִין בִּשְׁנֵי עִנְיָנִים, אֲבָל הֵם בְּעִנְיָן אֶחָד, כְּמוֹ שֶׁאָמְרוּ ז"ל (ביצה ז, ב) פָּתַח הַכָּתוּב בְּחָמֵץ וְסִיֵּם בִּשְׂאוֹר, לוֹמַר לְךָ הוּא חָמֵץ הוּא שְׂאוֹר, כְּלוֹמַר, אֵין הֶפְרֵשׁ בֵּין הֶחָמֵץ עַצְמוֹ וּבֵין דָּבָר הַמְּחַמֵּץ. That chamets not be found to us on Pesach: That chamets should not be seen in all of our dwellings all seven days of Pesach, as it is stated (Exodus 13:7), “and no chamets shall be seen with you, and no leaven shall be seen with you in all your territory (seven days).” And these are not two negative commandments about two topics, but rather one negative commandment; as they, may their memory be blessed, said (Beitzah 7b), “The verse opened with chamets and ended with leaven, to say to you that chamets is leaven” — meaning to say [that] there is no difference between chamets itself and something that causes it to become chamets.
מִשָּׁרְשֵׁי הַמִּצְוָה. מֶה שֶׁכָּתַבְנוּ בִּשְׁאָר מִצְוֹת הַפֶּסַח. דִּינֶיהָ מְבֹאָרִים בִּפְסָחִים (שם תל"ד). That which we have written about the other commandments of Pesach is from the roots of this commandment. Its laws are elucidated in Pesachim. (See Tur, Orach Chaim 434.)
וְנוֹהֶגֶת בְּכָל מָקוֹם וּבְכָל זְמַן, בִּזְכָרִים וּנְקֵבוֹת. וְהָעוֹבֵר עָלֶיהָ וְלָקַח חָמֵץ בְּפֶסַח וְהִנִּיחוֹ בִּרְשׁוּתוֹ, לוֹקֶה. אֲבָל אִם לֹא הוֹצִיאוֹ מִקֹּדֶם הַפֶּסַח מִבֵּיתוֹ אֵינוֹ לוֹקֶה עָלָיו לְפִי שֶׁאֵין בּוֹ מַעֲשֶׂה. וְאֵין לוֹקִין עָלָיו, כְּמוֹ שֶׁאָמַרְנוּ. And [it] is practiced in every place and at all times by males and females. And one who transgresses it and buys chamets on Pesach and places it in his domain is lashed. But if he does not remove it from before Pesach from his house, he is not lashed, since there is no act [involved] in it. And [so] we do not administer lashes for it, as we have said.