וַיִּשְׁמַ֣ע הָעָ֗ם אֶת־הַדָּבָ֥ר הָרָ֛ע הַזֶּ֖ה וַיִּתְאַבָּ֑לוּ וְלֹא־שָׁ֛תוּ אִ֥ישׁ עֶדְי֖וֹ עָלָֽיו׃
And when the people heard these evil tidings, they mourned; and no man did put on him his ornaments.
Read halakhic rulings (Jewish law) on Exodus 33:4: and classical halakhic sources.