Mishnayos Meilah Perek 6 Mishnah 2

In a case where the homeowner sent consecrated money in the hand of a deaf-mute, an imbecile, or a minor, who lack halakhic competence and cannot be commissioned as agents, in order to purchase an item from a storekeeper, if they performed his agency, the homeowner is liable for misuse, as his instructions were fulfilled. If they did not perform his agency but purchased a different item from the storekeeper, the storekeeper is liable for misuse. If the homeowner sent the money in the hand of a halakhically competent person and the homeowner remembered that the money was consecrated before the agent reached the storekeeper, the storekeeper is liable for misuse when he spends the money for his personal use. The homeowner is exempt from liability for misuse, because once he remembers that the money is consecrated his misuse is no longer unwitting, and one is liable to bring an offering for misuse only for unwitting misuse of consecrated property. What shall the homeowner do in a case where he remembers that the money is consecrated, in order to prevent the storekeeper from liability for misuse? He takes one peruta or a vessel and says: The consecrated peruta, wherever it may be, is desacralized with this peruta or vessel. The peruta is thereby desacralized, as a consecrated item is desacralized with money and with an item that has the equivalent value of money. The result is that the storekeeper spends non-sacred money.

שָׁלַח בְּיַד חֵרֵשׁ, שׁוֹטֶה, וְקָטָן, אִם עָשׂוּ שְׁלִיחוּתוֹ, בַּעַל הַבַּיִת מָעַל. לֹא עָשׂוּ שְׁלִיחוּתוֹ, הַחֶנְוָנִי מָעַל. שָׁלַח בְּיַד פִּקֵּחַ, וְנִזְכַּר עַד שֶׁלֹּא הִגִּיעַ אֵצֶל הַחֶנְוָנִי, הַחֶנְוָנִי מָעַל כְּשֶׁיּוֹצִיא. כֵּיצַד יַעֲשֶׂה. נוֹטֵל פְּרוּטָה אוֹ כְלִי וְיֹאמַר, פְּרוּטָה שֶׁל הֶקְדֵּשׁ בְּכָל מָקוֹם שֶׁהִיא, מְחֻלֶּלֶת עַל זֶה, שֶׁהַהֶקְדֵּשׁ נִפְדֶּה בְכֶסֶף וּבְשָׁוֶה כָסֶף: