מוֹצָ֥א שְׂפָתֶ֖יךָ תִּשְׁמֹ֣ר וְעָשִׂ֑יתָ כַּאֲשֶׁ֨ר נָדַ֜רְתָּ לַיהוָ֤ה אֱלֹהֶ֙יךָ֙ נְדָבָ֔ה אֲשֶׁ֥ר דִּבַּ֖רְתָּ בְּפִֽיךָ׃ (ס)
Guardarás aquilo que sair de teus lábios, e farás conforme prometeste a Yehovah, teu Elohim, voluntariamente, conforme falaste com tua boca. {ס}
Mishnah Megillah
There is no difference between one who is prohibited by vow from benefiting from his fellow and one who is prohibited by vow from [benefiting from] his food, except in the matter of setting foot [on his property] and of vessels which are not used for [preparing] food. There is no difference between vowed offerings and freewill-offerings except that he is responsible for vowed offering but not responsible for freewill-offerings.
Mishnah Terumot
He who intends saying ‘terumah’ and says ‘tithe’, or ‘tithe’ and says ‘terumah’; ‘Burnt-offering’ and he says ‘peace-offering’, or ‘peace-offering’ and he says ‘burnt-offering’; ‘[I vow] that I will not enter this house,’ and says ‘that house’, ‘That I will not derive any benefit from this [man],’ and says ‘from that [man],’ he has said nothing until his heart and mind are at one.