"I give an open challenge to Modi to point out even a single instance where I have spoken a lie," he told reporters and charged that it was Modi who had been speaking a large number of lies.
Singh said the language used by Modi at his election meetings yesterday in Madhya Pradesh was something that cannot be approved of.
More From This Section
He said the manner in which Modi had behaved in the snooping scandal indicated that he had no respect for the law.
The Congress General Secretary said that he would continue to expose the lies being said by Modi.
Digvijay said the BJP's Prime Ministerial nominee should not try to threaten Congressmen by saying that they will end up in jail.
He said Congressmen were not scared of jails and had endured prison life even during the British period.