Related על כתובות 5:6

One who vows from having sex with his wife, Beit Shammai say: [They can remain married] for 2 weeks, like the [period of impurity after the] birth of a female; Beit Hillel say: 1 week, like the birth of a male and like her menstrual period. More than that—he divorces her and pays the ketubah.

Workers [should have sex with their wives] twice a week. If they do work in a different town, once a week. Donkey drivers: once every 2 weeks. (The rest is missing in Ehrfurt manuscript).