וַיְדַבֵּ֤ר מֹשֶׁה֙ אֶל־רָאשֵׁ֣י הַמַּטּ֔וֹת לִבְנֵ֥י יִשְׂרָאֵ֖ל לֵאמֹ֑ר זֶ֣ה הַדָּבָ֔ר אֲשֶׁ֖ר צִוָּ֥ה יְהוָֽה׃
Kemudian Musa berbicara kepada para kepala suku orang Israel, katanya: “Inilah hal yang diperintahkan Yang Mahakekal:”
Mishneh Torah, Negative Mitzvot
Not to transgress in matters wherein one has assumed an obligation, as it is said, “….he shall not break his word” (Num. 30:3).