Sirach 12:5

5 Do well unto him that is lowly, but give not to the ungodly: hold back thy bread, and give it not unto him, lest he overmaster thee thereby: for thou shalt receive twice as much evil for all the good thou shalt have done unto him.

Sirach 12:5 In-Context

3 There can no good come to him that is always occupied in evil, nor to him that giveth no alms.
4 Give to the godly man, and help not a sinner.
5 Do well unto him that is lowly, but give not to the ungodly: hold back thy bread, and give it not unto him, lest he overmaster thee thereby: for thou shalt receive twice as much evil for all the good thou shalt have done unto him.
6 For the most High hateth sinners, and will repay vengeance unto the ungodly, and keepeth them against the mighty day of their punishment.
7 Give unto the good, and help not the sinner.

The Brenton translation of the Septuagint is in the public domain.