Azad had held a press conference on Sunday despite being warned by Amit Shah against it. He then dared Jaitley, tweeting, ""Hello dear Jaitleyji, are you filing defamation case against me? Please do file."


Arun Jaitley maintained a studied silence on Azad, but the next day, on Monday, filed a Rs 10 crore defamation suit against Delhi CM Arvind Kejriwal and five other AAP leaders.


Azad then tweeted, "Mera naam kyon hata diya @arunjaitley #Aap ne toh mere letters dikhae theey, mujhpar karo na case, registered post se maine bheje theey."


Jaitley has received support from the Prime Minister Narendra Modi who defended his second in command saying: "No one has any doubt about his honesty and integrity. The allegations against him are baseless."


At the press conference on Sunday, where Azad spoke about alleged irregularities in the DDCA, he repeatedly said there was no personal fight in his 'principled campaign' but played footage of a DDCA AGM of 2011-12, which purportedly showed him questioning Jaitley, who was in the chair.

Asked repeatedly as to why he was not taking the name of Jaitley and what his allegations against him were, Azad said there was no personal or political fight. It is a matter of principles and we have been fighting this battle for the last nine years, he said.