Deuteronomy 23:19-20

AKJV_Strongs(i)
  19 H5391 You shall not lend H5391 on usury H251 to your brother; H5392 usury H3701 of money, H5392 usury H400 of victuals, H5392 usury H3605 of any H1697 thing H5391 that is lent H5391 on usury:
  20 H5237 To a stranger H5391 you may lend H5391 on usury; H251 but to your brother H5391 you shall not lend H5391 on usury: H3068 that the LORD H430 your God H1288 may bless H3605 you in all H4916 that you set H3027 your hand H776 to in the land H834 where H8033 H935 you go H3423 to possess it.