if the peoples of the land brought wares or any grain to sell on the Sabbath day, we would not buy it from them on the Sabbath, or on a holy day; and we would forego the seventh year's produce and the exacting of every debt.
Nehemiah 10:31
Surrounding context
10:30 We would not give our daughters as wives to the peoples of the land, nor take their daughters for our sons;
10:31 if the peoples of the land brought wares or any grain to sell on the Sabbath day, we would not buy it from them on the Sabbath, or on a holy day; and we would forego the seventh year's produce and the exacting of every debt.
10:32 Also we made ordinances for ourselves, to exact from ourselves yearly one-third of a shekel for the service of the house of our God: