וַיְצַ֣ו מֹשֶׁ֗ה וַיַּעֲבִ֨ירוּ ק֥וֹל בַּֽמַּחֲנֶה֮ לֵאמֹר֒ אִ֣ישׁ וְאִשָּׁ֗ה אַל־יַעֲשׂוּ־ע֛וֹד מְלָאכָ֖ה לִתְרוּמַ֣ת הַקֹּ֑דֶשׁ וַיִּכָּלֵ֥א הָעָ֖ם מֵהָבִֽיא׃
And Moses gave commandment, and they caused it to be proclaimed throughout the camp, saying: ‘Let neither man nor woman make any more work for the offering of the sanctuary.’ So the people were restrained from bringing.
Mishnah Shevuot
Oaths are of two kinds, subdivided into four; The laws concerning the discovery of having contracted uncleanness are of two kinds, subdivided into four; The laws concerning carrying on the Sabbath are of two kinds, subdivided into four. The symptoms of negas are of two kinds, subdivided into four.