וַיִּרְכְּס֣וּ אֶת־הַחֹ֡שֶׁן מִטַּבְּעֹתָיו֩ אֶל־טַבְּעֹ֨ת הָאֵפֹ֜ד בִּפְתִ֣יל תְּכֵ֗לֶת לִֽהְיֹת֙ עַל־חֵ֣שֶׁב הָאֵפֹ֔ד וְלֹֽא־יִזַּ֣ח הַחֹ֔שֶׁן מֵעַ֖ל הָאֵפֹ֑ד כַּאֲשֶׁ֛ר צִוָּ֥ה יְהוָ֖ה אֶת־מֹשֶֽׁה׃
Mereka mengikat tutup dada itu dari cincin-cincinnya ke cincin-cincin efod dengan tali biru nila, supaya tutup dada itu berada di atas ikat pinggang tenunan efod dan tidak terlepas dari efod itu, sebagaimana diperintahkan Yang Mahakekal kepada Musa.
Mishneh Torah, Negative Mitzvot
Not to compound aught after the formula of the incense, as it is said, “…. ye shall not make unto yourselves according to the composition thereof” (Ex. 30:37).
Mishneh Torah, Negative Mitzvot
That the breastplate shall not be loosened from the ephod, as it is said, “That the breastplate be not loosed from the ephod” (Ex. 28:28).