וְעָשִׂ֜יתָ כִּיּ֥וֹר נְחֹ֛שֶׁת וְכַנּ֥וֹ נְחֹ֖שֶׁת לְרָחְצָ֑ה וְנָתַתָּ֣ אֹת֗וֹ בֵּֽין־אֹ֤הֶל מוֹעֵד֙ וּבֵ֣ין הַמִּזְבֵּ֔חַ וְנָתַתָּ֥ שָׁ֖מָּה מָֽיִם׃
זאָלסט אױך מאַכן אַ האַנטפֿאַס פֿון קופּער, מיט זײַן געשטעל פֿון קופּער, זיך צו װאַשן; און זאָלסט אים אַװעקשטעלן צװישן אוֹהל-מוֹעד און צװישן מזבח, און אַרײַנטאָן אַהין װאַסער.
Rashi
כיור A LAVER — like a large pot with teats which discharged water by the way of their openings.
Chizkuni
ועשית כיור, “you are to make a laver;” the reason why this vessel has not been mentioned earlier when the furnishings of the Tabernacle have been listed, is that the function of the laver was only as something preparatory for the performance of a commandment, not a commandment itself.
Sforno
ועשית כיור, this is another vessel which has not been mentioned before with the other vessels that were part of the Tabernacle. The reason is that the basin was not instrumental in attracting the presence of the Shechinah to the Tabernacle. Its function was merely preparatory to the priests’ service in the Tabernacle.
Or HaChaim
צוטריטלעך נאָר פֿאַר פּרעמיום־מיטגלידערRabbeinu Bahya
צוטריטלעך נאָר פֿאַר פּרעמיום־מיטגלידערSiftei Chakhamim
צוטריטלעך נאָר פֿאַר פּרעמיום־מיטגלידערRav Hirsch
צוטריטלעך נאָר פֿאַר פּרעמיום־מיטגלידערRashi
וכנו — Understand this as the Targum renders it: בסיסה ITS BASE, i. e. a stand specially made for the laver.