Illustrations paragraph 4
If Levi sees that Reuven wants to make a marriage arrangement with Shimon and knows that the bridegroom has serious flaws which Reuven does not know of, which would lead to Reuven not making the marriage arrangement, Levi must inform Reuven. But there are many conditions which we will explain later. Above all, Levi must be very careful before doing this and he should not compare leniencies of one case to another case. Before we begin to explain this law in detail, we will explain common stumbling blocks relevant to it. Even if it seems there is no point writing them as they are simple, we will explain them because of the great misconduct that is prevalent in this matter.