8לְפִיכָךְ אִם לֹא בִּטֵּל קֹדֶם שֵׁשׁ וּמִשֵּׁשׁ שָׁעוֹת וּלְמַעְלָה מָצָא חָמֵץ שֶׁהָיָה דַּעְתּוֹ עָלָיו וְהָיָה בְּלִבּוֹ וּשְׁכָחוֹ בִּשְׁעַת הַבִּעוּר וְלֹא בִּעֲרוֹ הֲרֵי זֶה עָבַר עַל (שמות יג ז) (דברים טז ד) "לֹא יֵרָאֶה" וְ (שמות יב יט) "לֹא יִמָּצֵא" שֶׁהֲרֵי לֹא בִּעֵר וְלֹא בִּטֵּל. וְאֵין הַבִּטּוּל עַתָּה מוֹעִיל לוֹ כְּלוּם לְפִי שֶׁאֵינוֹ בִּרְשׁוּתוֹ וְהַכָּתוּב עֲשָׂהוּ כְּאִלּוּ הוּא בִּרְשׁוּתוֹ לְחַיְּבוֹ מִשּׁוּם לֹא יֵרָאֶה וְלֹא יִמָּצֵא. וְחַיָּב לְבַעֲרוֹ בְּכָל עֵת שֶׁיִּמְצָאֶנּוּ. וְאִם מְצָאוֹ בְּיוֹם טוֹב כּוֹפֶה עָלָיו כְּלִי עַד לָעֶרֶב וּמְבַעֲרוֹ. וְאִם שֶׁל הֶקְדֵּשׁ הוּא אֵינוֹ צָרִיךְ לִכְפּוֹת עָלָיו כְּלִי שֶׁהַכּל פּוֹרְשִׁין מִמֶּנּוּ:
Thus, a person who does not nullify [his chametz] before the sixth hour and discovers chametz which he: considered important and [valued] in his heart, then forgot at the time of the destruction of chametz, and hence did not destroy, transgresses [the prohibitions]: "[leaven] shall not be seen" and "[leaven] shall not be found." Behold, he has neither destroyed nor nullified [his chametz], and nullification at this time would not be effective, for [the chametz] is no longer in his possession. Even so, the Torah considers it as if it were in his possession, to obligate him for [transgression of the commandments:] "[leaven] shall not be seen" and "[leaven] shall not be found." [Therefore,] he is obligated to destroy it whenever he finds it. If he finds it on the day of a festival, he should cover it with a utensil until the evening, and then destroy it. [If the chametz] was consecrated property, there is no need to cover it with a utensil, for regardless, everyone shies away from its use.