New Delhi, Jan 23 (ANI): Reacting on Kapil Sibal's 'salesman remark' on Narendra Modi, BJP leader Ravi Shankar Prasad condemned the same and invited Sibal for an open debate on any topic whatsoever. Further, commenting on P Chidambaram's remark on BJP, Prasad said that P Chidambaram has rattled the whole financial structure of the nation and he should concentrate on the same.