Deuteronomy 24:10

If thy neighbour owe thee a debt, any debt whatsoever, thou shalt not go into his house to take his pledge:

Take heed to yourself in [regard of] the plague of leprosy: you shall take great heed to do according to all the law, which the priests the Levites shall report to you; take heed to do, as I have charged you.

When thou dost lend thy brother any thing, thou shalt not go into his house to fetch his pledge.