The Process is very simple.
1. Once you obtain Birth or Marriage Certificate municipality. Write an Application to DC of your town that you want a forwarding letter from him to Home Department,Haryana for verification of certificates. They will issue another letter(From DC to municipality) with your application to the municipality. in my case i got it by hand otherwise they will mail it themselves. Municipality after verifying will return back with a letter from them to DC. Finally DC will generate a letter from him to Home Department. it took 3 days in my case.
2. Now you have to go Under Secretary Home Department, Government of Haryana who is sitting at Haryana Civil Secretariat,Sector-1, Chandigarh. As for as i remember on 5th floor. They will send you to Passport Branch on 7th floor. Passport branch will verify and will send your dicuments to Under Secretary Home Department. in my case it took only 1 hour.
3.Now your documents are ready to get attestation from The Ministry of External Affairs, contact any agent (in my case Akbar Travels) within 7 days i got everything done. 25th August 2016 From Kuwait, Kuwait City