וְֽאֶת־הָאַבְנֵ֞ט שֵׁ֣שׁ מָשְׁזָ֗ר וּתְכֵ֧לֶת וְאַרְגָּמָ֛ן וְתוֹלַ֥עַת שָׁנִ֖י מַעֲשֵׂ֣ה רֹקֵ֑ם כַּאֲשֶׁ֛ר צִוָּ֥ה יְהוָ֖ה אֶת־מֹשֶֽׁה׃ (ס)
and the girdle of fine twined linen, and blue, and purple, and scarlet, the work of the weaver in colours; as the LORD commanded Moses.
Read halakhic rulings (Jewish law) on Exodus 39:29: and classical halakhic sources.