Vows Regarding Social and Economic Life

Nehemiah 10:30-31

and that we would not give our daughters to the peoples of the land, nor take their daughters for our sons;

and if the peoples of the land bring wares or any grain on the Sabbath day to sell, that we would not buy of them on the Sabbath, or on a holy day; and that we would forego the seventh year, and the exaction of every debt.