Numbers 23:2

23:2 So Balak did just as Balaam had said. Balak and Balaam then offered on each ¹  altar a bull and a ram.

Numbers 23:30

23:30 So Balak did as Balaam had said, and offered a bull and a ram on each altar.

¹ tn The Hebrew text has “on the altar,” but since there were seven of each animal and seven altars, the implication is that this means on each altar.