Women and Rosh Chodesh
(ב) וַיֹּ֤אמֶר אֲלֵהֶם֙ אַהֲרֹ֔ן פָּֽרְקוּ֙ נִזְמֵ֣י הַזָּהָ֔ב אֲשֶׁר֙ בְּאָזְנֵ֣י נְשֵׁיכֶ֔ם בְּנֵיכֶ֖ם וּבְנֹתֵיכֶ֑ם וְהָבִ֖יאוּ אֵלָֽי׃
(2) And Aaron said unto them: ‘Break off the golden rings, which are in the ears of your wives, of your sons, and of your daughters, and bring them unto me.’

(כב) וַיָּבֹ֥אוּ הָאֲנָשִׁ֖ים עַל־הַנָּשִׁ֑ים כֹּ֣ל ׀ נְדִ֣יב לֵ֗ב הֵ֠בִיאוּ חָ֣ח וָנֶ֜זֶם וְטַבַּ֤עַת וְכוּמָז֙ כָּל־כְּלִ֣י זָהָ֔ב וְכָל־אִ֕ישׁ אֲשֶׁ֥ר הֵנִ֛יף תְּנוּפַ֥ת זָהָ֖ב לַיהוָֽה׃

(22) And they came, both men and women, as many as were willing-hearted, and brought nose-rings, and ear-rings, and signet-rings, and girdles, all jewels of gold; even every man that brought an offering of gold unto the LORD.
(כה) וְכָל־אִשָּׁ֥ה חַכְמַת־לֵ֖ב בְּיָדֶ֣יהָ טָו֑וּ וַיָּבִ֣יאוּ מַטְוֶ֗ה אֶֽת־הַתְּכֵ֙לֶת֙ וְאֶת־הָֽאַרְגָּמָ֔ן אֶת־תּוֹלַ֥עַת הַשָּׁנִ֖י וְאֶת־הַשֵּֽׁשׁ׃
(25) And all the women that were wise-hearted did spin with their hands, and brought that which they had spun, the blue, and the purple, the scarlet, and the fine linen.
(כו) וְכָל־הַ֨נָּשִׁ֔ים אֲשֶׁ֨ר נָשָׂ֥א לִבָּ֛ן אֹתָ֖נָה בְּחָכְמָ֑ה טָו֖וּ אֶת־הָעִזִּֽים׃
(26) And all the women whose heart stirred them up in wisdom spun the goats’hair.

(כב) ויבואו האנשים על הנשים. כלומר לשלול מהן תכשיטיהן כדכתיב חח ונזם ואעפ"כ הנשים שמחות וזהירות במלאכת שמים כדכתיב כל הנשים אשר נשא לבן אותנה לפיכך זכו הנשים שלא לעשות מלאכה בראש חדש לפי שבמעשה העגל לקחו תכשיטיהן בעל כרחן כדמשמע מדכתיב ויתפרקו וגו' ובמעשה המשכן שמחו בנתינה לפיכך נתן להם ר"ח לי"ט ונ"ל דזהו ר"ח ניסן שבו הוקם המשכן ואגב אותו ר"ח משמרות כל ר"ח השנה:

(22) ויבואו האנשים על הנשים, “and the men came to the women intending to deny them to offer their jewelry such as חח ונזם nose rings and ear rings; however the women were quite anxious to donate even these pieces of jewelry, seeing that it was for holy purpose. This is why the Torah gives them special credit for their general attitude in verse 26: וכל הנשים אשר נשא לבם אותנה, “and all the women whose heart stirred them, etc.” According to our sages, this is the reason why they were given a holiday each Rosh Chodesh by being allowed to treat it as a sort of holiday, not having to perform tedious activities. This was also in recognition of the fact that they had refused to part with any of their jewelry during the episode of the golden calf. (Compare Exodus 32,2, as interpreted by Pirke de Rabbi Eliezer in chapter 45). According to our author, they were given off on the first day of the month of Nissan during that year, as that was the day when the Tabernacle was put up. Subsequently, every Rosh Chodesh became a semi-holiday for the women.

Pirkei d' R. Elizer

When the men came to take their wives' gold earrings for the golden calf, the women refused to hand them over. They told their husbands, "We will not obey you and help you make an abomination that has no power or salvation." God rewarded them in this world [for this refusal] by granting them a greater degree of observance on Rosh Chodesh. And God rewards them in the World to Come by giving them the power of constant renewal which characterizes Rosh Chodesh.

(Book of our Heritage, Eliyahu Ki Tov, pg. 222)