A. One who knows of an individual who wants to start a partnership with another, it is permitted to tell him that the fellow is a bad person, and can cause him harm, when the required conditions are met [A. He is certain of the harm. B. He must not exaggerate. C. His intention is for a constructive purpose. D. There is no other way to effect a solution. G. The report will not cause the subject any harm, which is not sanctioned by Torah law].
B. Once they have already started a partnership, it is permitted to tell him, on condition that he won’t cause hurt to his partner, for example, he won’t break up the partnership, but only take care not to be harmed.