Sirach 13:4

4 If thou be for his profit, he will use thee: but if thou have nothing, he will forsake thee.

Sirach 13:4 In-Context

2 Burden not thyself above thy power while thou livest; and have no fellowship with one that is mightier and richer than thyself: for how agree the kettle and the earthen pot together? for if the one be smitten against the other, it shall be broken.
3 The rich man hath done wrong, and yet he threateneth withal: the poor is wronged, and he must intreat also.
4 If thou be for his profit, he will use thee: but if thou have nothing, he will forsake thee.
5 If thou have any thing, he will live with thee: yea, he will make thee bare, and will not be sorry for it.
6 If he have need of thee, he will deceive thee, and smile upon thee, and put thee in hope; he will speak thee fair, and say, What wantest thou?

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