You may purchase food to eat and water to drink from them.

Sell me food for cash so that I can eat and sell me water to drink. Just allow me to go through on foot,

You must not charge interest on a loan to your fellow Israelite, whether on money, food, or anything else that has been loaned with interest.

However, by no means eat the blood, for the blood is life itself – you must not eat the life with the meat!