Surjewala's question to Nadda: What is source of BJP, RSS funding?

Randeep Surjewala said, "BJP President, Shri J.P. Nadda has lost his political balance in his flailing attempts at distraction from the issues of National Security and Territorial Integrity. Rise from ur fears, defend the Nation & support our armed forces. This is true test of ‘Patriotism’." Surjewala also asked Nadda from where does BJP and RSS get their funding and will the BJP chief disclose their source of funding?