Nedarim7: 8
,,שֶׁאַתְּ עוֹשָׂה אֵינִי אוֹכֵל עַד הַפֶּסַח”, ,,שֶׁאַתְּ עוֹשָׂה אֵינִי מִתְכַּסֶּה עַד הַפֶּסַח”, עָשְׂתָה לִפְנֵי הַפֶּסַח — מֻתָּר לֶאֱכוֹל וּלְהִתְכַּסּוֹת אַחַר הַפֶּסַח. ,,שֶׁאַתְּ עוֹשָׂה עַד הַפֶּסַח אֵינִי אוֹכֵל”, וְ,,שֶׁאַתְּ עוֹשָׂה עַד הַפֶּסַח אֵינִי מִתְכַּסֶּה”, עָשְׂתָה לִפְנֵי הַפֶּסַח — אָסוּר לֶאֱכוֹל וּלְהִתְכַּסּוֹת אַחַר הַפֶּסַח.
[If a person said:] “What you make I shall not eat until Pesach,” [or] “What you make I shall not wear until Pesach,” [what] she makes before Pesach he is permitted to eat or wear after Pesach. “What you make until Pesach I shall not eat,” [or] “what you make until Pesach I shall not wear,” he is forbidden to eat or wear after Pesach [what] she made before Pesach.