Good News Translation
Be careful when somebody offers you advice. Find out first what his interest in the matter is, because you can be sure that he is thinking primarily of himself. Why should he come out on top instead of you?

New Revised Standard Version
Be wary of a counselor, and learn first what is his interest, for he will take thought for himself. He may cast the lot against you

Contemporary English Version
Before you do what they say, see if they are looking out for themselves and putting you at risk

New American Bible
Watch out when one offers advice; find out first of all what he wants. For he also may be thinking of himself— Why should the opportunity fall to him?

Douay-Rheims Bible
Every counsellor giveth out counsel, but there is one that is a counsellor for himself.

Every counsellor giveth out counsel, but there is one that is a counsellor for himself.

Sirach 37:6
Forget not thy friend in thy mind, and be not unmindful of him in thy riches.

Sirach 37:7
Consult not with him that layeth a snare for thee, and hide thy counsel from them that envy thee.

Sirach 37:9
Beware of a counsellor. And know before what need he hath: for he will devise to his own mind:

Sirach 37:10
Lest he thrust a stake into the ground, and say to thee: