2 Samuel 8:2

8:2 He struck Moab, and measured them with the line, making them to lie down on the ground; and he measured two lines to put to death, and one full line to keep alive. The Moabites became servants to David, and brought tribute.
-World English Bible

Other Translation

8:2 And he smote Moab, and measured them with a line, casting them down to the ground; even with two lines measured he to put to death, and with one full line to keep alive. And [so] the Moabites became David's servants, [and] brought gifts.
-King James Version