דַּבֵּ֞ר אֶל־בְּנֵ֤י יִשְׂרָאֵל֙ וְאָמַרְתָּ֣ אֲלֵהֶ֔ם וְעָשׂ֨וּ לָהֶ֥ם צִיצִ֛ת עַל־כַּנְפֵ֥י בִגְדֵיהֶ֖ם לְדֹרֹתָ֑ם וְנָֽתְנ֛וּ עַל־צִיצִ֥ת הַכָּנָ֖ף פְּתִ֥יל תְּכֵֽלֶת׃
你要告訴以色列人，對他們說：叫他們世世代代在衣服的角上做繸子，並在每個角的繸子上綴一根藍色的線。
Rashi
ועשו להם ציצת THAT THEY MAKE THEM A FRINGE — It is called צצית, because of the threads that hang down from it. Similar is, (Ezekiel 8:3) “and he caught me by the curls (ציצת) of my head’’. (The word denotes something twisted as threads or curls). — Another explanation is: it is called ציצת because of the command associated with it (v. 39) “and ye shall look at it”. Similar is, “looking (מציץ) from the lattice” (Song 2:9). (The word therefore denotes “something looked at”) (Sifrei Bamidbar 115).
Rashbam
ציצית, similar to Ezekiel 8,3בציצת ראשי , a bunch of fringes suspended like the hair of one’s head.
Or HaChaim
Speak etc. and you shall say: Since there is an element of commandment as well as advantage, and honor which come from the commandment, therefore it said both Speaking (in a commanding form) and saying (in a gentle and respectful form).