Commentary for Exodus 28:39

וְשִׁבַּצְתָּ֙ הַכְּתֹ֣נֶת שֵׁ֔שׁ וְעָשִׂ֖יתָ מִצְנֶ֣פֶת שֵׁ֑שׁ וְאַבְנֵ֥ט תַּעֲשֶׂ֖ה מַעֲשֵׂ֥ה רֹקֵֽם׃

And thou shalt weave the tunic in chequer work of fine linen, and thou shalt make a mitre of fine linen, and thou shalt make a girdle, the work of the weaver in colours.

Rashi on Exodus