"This is a fake attempt for unity and it will never succeed. No wise party can join hands with Congress. If they (some political party) are doing it, they are doing so at their own peril," he told reporters on the sidelines of a function here.
Earlier in the day, Congress vice-President Rahul Gandhi and Trinamool chief Mamata Banerjee along with some regional parties at a meeting in Delhi sought to put up a united face raising the pitch against demonetisation by demanding resignation of Prime Minister Narendra Modi.
Referring to scams and corruption during the Congress rule, he claimed, "Earlier Opposition parties had to protest against corruption of the government. But now, the government is fighting against corruption and the opposition is fighting against the government.