11. One is permitted to inquire and question someone about another fellow for the sake of a partnership, a marriage prospect or the like, even though he may hear negative things about him. However, when inquiring about another, one is required to first mention the purpose for his questions, so as not to cause the speaker to commit the sin of lashon hara by speaking with wrong intentions.
ט״ו בתמוז ה׳תש״פ
Every moment that prerson restrain him mouth he acquiting to the Hidden Light, that there is no Mal'ach and creation to be able Imagine.(Hagra letter) 1