AAP chief Arvind Kejriwal at the rally in Delhi's Trilokpuri.
The funding to Aam Aadmi Party from four dubious companies became the focal point of campaigning three days before the Delhi assembly elections. As Prime Minister Narendra Modi took on Arvind Kejriwal, the AAP chief hit back, claiming the BJP does not wish to discuss issues, its politics was "limited to abuses".
"I dare the finance minister to arrest me, stop this mudslinging," Mr Kejriwal said at a rally in East Delhi's Trilokpuri.
Counting instances, the AAP chief said, "PM said Kejriwal is a Naxal, am I one? Nupur Sharma called me a monkey, Kiran Bedi says Kejriwal is toxic, Nirmala Sitharaman says he's a thief..."
Mr Kejriwal has already demanded that the BJP apologise regarding two advertisements it published lampooning him. One depicted a garlanded portrait of his former mentor Anna Hazare and the other used the term "upadravi gotra" which AAP claimed was a slur on the Agarwal community - which the party considers its votebank.
Following the controversy, Union finance minister Arun Jaitely said the BJP campaign should be "positive". But as the pitch of BJP campaign became shrill following the charges of shady funding against AAP, Mr Kejriwal fought back.
Today, daring the government again to arrest him if he has done anything wrong, he said, "All the police, CBI, IB, income tax is with the government."
The AAP chief has claimed that his party has committed no irregularity in accepting the funds was in no way responsible for the way the companies raised the money.
"Even my strongest critics believe I am honest," he said.
AAP has demanded a Supreme Court-monitored Special Investigation Team to probe the funding of all three major parties. The party said it was ready to face any action if it was guilty of irregularities.