You can sell us food to eat and water to drink in exchange for silver. Only let us pass through on foot,

Numbers 20:19
"We will stay on the main road," the Israelites replied, "and if we or our herds drink your water, we will pay for it. There will be no problem; only let us pass through on foot."

Deuteronomy 2:27
"Let us pass through your land; we will stay on the main road. We will not turn to the right or to the left.

You shall sell me meat for money, that I may eat; and give me water for money, that I may drink: only I will pass through on my feet;