Cross reference
Numbers 20:19
19 And the children of Israel said unto him, We will go up by the highway; and if we drink of thy water, I and my cattle, then will I give the price thereof: let me only, without `doing' anything `else', pass through on my feet.
Deuteronomy 2:6
6 Ye shall purchase food of them for money, that ye may eat; and ye shall also buy water of them for money, that ye may drink.
Deuteronomy 2:28
28 Thou shalt sell me food for money, that I may eat; and give me water for money, that I may drink: only let me pass through on my feet,
Exodus 12:38
38 And a mixed multitude went up also with them; and flocks, and herds, even very much cattle.