מוֹצָ֥א שְׂפָתֶ֖יךָ תִּשְׁמֹ֣ר וְעָשִׂ֑יתָ כַּאֲשֶׁ֨ר נָדַ֜רְתָּ לַיהוָ֤ה אֱלֹהֶ֙יךָ֙ נְדָבָ֔ה אֲשֶׁ֥ר דִּבַּ֖רְתָּ בְּפִֽיךָ׃ (ס)
<span class="x" onmousemove="Show('perush','Este es el <b>94to Precepto Positivo</b> enumerado por el Rambam en el Prefacio a Mishné Torá, su “Compendio de la Ley Hebrea” para todo el Pueblo de Israel.',event);" onmouseout="Close();">Guardarás lo que tus labios pronunciaren; y harás</span>, como prometiste á SEÑOR tu Dios, lo que de tu voluntad hablaste por tu boca.
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.