Congress spokesperson Shashi Tharoor also questioned Jaitley's attack on Robert Vadra, son-in-law of Congress President Sonia Gandhi, and said why BJP was targeting a "private individual", who is neither a member of a political party nor a candidate in this Lok Sabha polls.
Tharoor's remark came after Jaitley posted stinging remarks on his blog against Singh and Vadra.
The BJP leader today took potshots at Singh in his blog saying the Prime Minister "walked on snow, but did not leave any footprints", a day after PMO sought to counter the perception that Singh has been "weak" in his tenure,
"The PMO thought that this would counter the charge that Prime Minister Manmohan Singh was not a 'speaking' Prime Minister... He must be heard with attention. He must be a leader and not just a reader," Jaitley said.
Targeting Vadra he wrote, "start a business without any investment. Investment will flow as loans and advances which is a synonym for political equity. Use these loans to buy property at fraction of the market cost.