He was replying to a question on whether he will reply to the show cause notice issued by BJP Parliamentary Board asking him why he should not be expelled for his anti-party activities and indiscipline.
BJP has reportedly given him ten days to answer.
"The tragedy of my life is that yesterday for the first time I said that the prime minister of this country had at least done one good thing that he has prevented a corrupt man from becoming the director of CBI," Jethmalani said.
He again praised Prime Minister Manmohan Singh for selecting Ranjit Sinha as the next CBI irector saying he has appointed the right person.
"BJP has suspended me from the membership of the party for saying something which has pleased the PM of this country. It is an act indiscipline according to BJP," Jethmalani said.
He also said though he has not received the show cause notice, BJP must have stated some ground on which he has been suspended.
Asked if his suspension has come due to his attacks on BJP chief Nitin Gadkari, he said "I don't know but I am entitled to suspect that."