He said Jain had admitted that he was a businessman and not a politician, which showed that he had struck a business deal with the Akali Dal.
He said Jain had stabbed the Congress in the back and betrayed the electorate of the Moga constituency, who had elected him as a Congress candidate.
"It is high time the people came forward and rejected such elements, who take the help of electoral politics to further their business interests, so that standards of political ethics and morality are maintained," Singh said.