"In a function in Bhopal, Gadkari said 'IQ of Swami Vivekananda and Dawood Ibrahim was same.' Any comment from (Narender) Modi and his fans?" Digvijay Singh said on Twitter.
Addressing an award ceremony in Bhopal, Gadkari had said on Sunday, "As per psychology, if we can compare the IQ level of Swami Vivekananda and that of Dawood Ibrahim, then it could have been almost the same. But Vivekananda used it in nation building, brotherhood and spiritualism while Dawood used that in excelling in the crime world".
Singh, who has been targeting the BJP chief over his business links, asked, "Why do people question my credibility. Whatever I have said has come correct."
In his tweets, he had said, "Gadkari involved in setting up bogus companies - Correct; Gadkari a businessman - Correct."
To buttress the point that he has always been proved correct on the issues he had raised, Singh posted a number of tweets on Monday.
"Sangh involved in terror - Correct; Anna agitation supported by RSS - Correct; Team Anna politically ambitious - Correct; Ramdev a thug - Correct; Balkrishna passport and degrees forged - Correct; Thackeray family from Bihar-Correct," the tweets said.
"Kejriwal is politically ambitious and wants to assume power without fighting elections - Correct; Kejriwal getting foreign funding to foment civil disobedience - Correct," he said in the tweets.
Singh added, "Would my detractors on social media please reconsider their opinion?"