Genesis 13:7

13:7 So there were quarrels between Abram’s herdsmen and Lot’s herdsmen. (Now the Canaanites and the Perizzites were living in the land at that time.)

Genesis 26:20

26:20 the herdsmen of Gerar quarreled with Isaac’s herdsmen, saying, “The water belongs to us!” So Isaac named the well Esek because they argued with him about it.