Salary details of wife working in private company using rti?

Ideally u shud write income tax authorities for the last 3 yrs or more income tax returns filed which can be considered as valid evidence for proof of income

You would have to hire a detective and they would do the needfull . Than call the detective as your witness in court and he can cross examine your wife . Your detective would click pictures of her entering the office in and out . After this Summon her employer and ask the company for her salary slip.Alternatively if you know your wifes email id send her an offer asking for her resume for such and such job profile or catch hold of a recruting agency giving her an interview call . And they can get her details .