Deuteronomy 24:19-22

AKJV_Strongs(i)
  19 H3588 When H7114 you cut H7105 down your harvest H7704 in your field, H7911 and have forgot H6016 a sheaf H7704 in the field, H7725 you shall not go H7725 again H3947 to fetch H1616 it: it shall be for the stranger, H3490 for the fatherless, H490 and for the widow: H3068 that the LORD H430 your God H1288 may bless H3605 you in all H4639 the work H3027 of your hands.
  20 H3588 When H2251 you beat H2132 your olive H6288 tree, you shall not go over the boughs H310 again: H1616 it shall be for the stranger, H3490 for the fatherless, H490 and for the widow.
  21 H3588 When H1219 you gather H3754 the grapes of your vineyard, H5953 you shall not glean H310 it afterward: H1616 it shall be for the stranger, H3490 for the fatherless, H490 and for the widow.
  22 H2142 And you shall remember H1961 that you were H5650 a slave H776 in the land H4714 of Egypt: H5921 therefore H3651 H6680 I command H6213 you to do H2088 this H1697 thing.