"When you reap your harvest,
        and forget a sheaf in the 
field,
        do not go back to get it;
    it shall be for the stranger,
    the 
fatherless, and the widow,
        that the Lord may bless you
        in all 
the work of your hands.  
When you beat your olive trees, 

    do not go over the boughs again,
        it shall be for the stranger, 

        the fatherless, and the widow.  
"When you gather the 
grapes of your vineyard,
    do not glean it afterward;
        it shall be 
for the stranger,
       the fatherless, and the widow. 
Remember 
that you were a slave in Egypt;
    therefore do this thing."
                           
---Deuteronomy 24:19-22