"The issue of Singhvi is just a sample as it is only what has come out in the public domain. How many Congress leaders are turning black money into white?
"Congress has created a lot of black money during the last 10 years of its government, which saw a lot of corruption and scams. Congress President Sonia Gandhi should clarify," said BJP national secretary Shrikant Sharma.
Attacking the Congress, he said, "It sermonises on black money and this is what is happening in its own house. You are producing black money in your own house and are evading taxes. The Congress has a lot to answer for.
"Either you (Congress) own up that your tall leaders are evading taxes and indulging in generation of black money or you disown Singhvi."
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Sharma accused the Congress of being the "fountainhead of corruption" and said this is the reason why its MPs did not give an undertaking on black money in Parliament whereas all the BJP legislators had done so.
Citing details of revelations by the Income Tax Settlement Commission, Patra said there has been a substantial increase in Singhvi's income and, in a short span of time between Jan. 15, 2011, to March 31, 2011, there was a considerable jump in payments for his legal assistance.
"In this short span of about two-and-a-half months, about 18,199 vouchers were signed by Singhvi. On a single day, March 31, 2011, about 1,207 vouchers were signed. All these are self -made vouchers. No authentic bills were procured," Patra said.