Vadra's anticipatory bail application is likely to be heard by the court on Saturday.
Vadra's interim protection from arrest was extended till April 1.
The case relates to allegations of money laundering in the purchase of a London-based property -- located at 12, Bryanston Square -- worth 1.9 million pounds, which is allegedly owned by Vadra.
Special Judge Arvind Kumar also directed him not to tamper with the evidence or influence witnesses and join the investigation as and when called by the investigating officer.
Vadra is expected to be questioned again on either Friday or Saturday.
Enforcement Directorate alleged that he was not cooperating and sought his custodial interrogation.
Vadra, on Facebook termed as "witch hunt" the Enforcement Directorate's action of attaching assets of a firm linked to him, and claimed that it showed "complete misuse of assertion of power".
Vadra was directed by a Delhi court to cooperate with the investigation being carried out by the central probe agency after he knocked on its door seeking anticipatory bail in this case.