Deuteronomy 15:9-10

9Beware that there be not a base thought in thine heart, saying, The seventh year, the year of release, is at hand; and thine eye be evil against thy poor brother, and thou give him nought; and he cry unto the LORD against thee, and it be sin unto thee.

10Thou shalt surely give him, and thine heart shall not be grieved when thou givest unto him: because that for this thing the LORD thy God shall bless thee in all thy work, and in all that thou puttest thine hand unto.