Deuteronomy 15:8-9

8but thou shalt surely open thy hand unto him, and shalt surely lend him sufficient for his need in that which he wanteth. 9Beware that there be not a base thought in thy 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 Jehovah against thee, and it be sin unto thee.