Congress President Sonia Gandhi's son-in-law Robert Vadra on Thursday reacted to Prime Minister Narendra Modi's 'raincoat' barb towards former PM Manmohan Singh through a facebook post. Vadra dubbed PM Modi's remark as 'extremely demeaning and shameful', in his facebook post he wrote, "It's extremely shameful for the entire nation that a senior and graceful politician like Manmohanji had to bear the brunt of our PM, Narendra Modi's jibes. His remarks, 'The art of taking bath wearing a raincoat must be learnt from Manmohan Singh' were extremely demeaning. Manmohan ji is an epitome of grace and maturity that he even refused to respond to our PM." The provoked members of Congress walked out of the Rajya Sabha after PM Modi's attack on veteran economist Manmohan Singh. You may also want to watch- On Wednesday, Prime Minister Narendra Modi in a reply to the Motion of thanks on the President's address in Rajya Sabha took a dig at the squeaky clean record of 35 years of service of Manmohan Singh in which so many scams surfaced yet there is no stain on his image and accused the former prime minister of having a talent of 'bathing in raincoats', and getting away with the ugliest of scams. He said, "Dr. Manmohan Singh has played a significant role in the economic system of India. In the history of India it is rare to find a man who has had a such a long relationship with the economy of India, 35 years of 70 years of independence." He further added, "We leaders have so much to study as so much happened at the time, but there was not a single blot on him. This is a special skill Dr. Manmohan Singh excelled at and we should all learn this art of bathing in raincoat." Robert Vadra also hit out at Prime Minister Modi for linking Rahul Gandhi's 'earthquake' remark to the tremors of Uttarakhand. The post further read, "Day before, Mr Modi took jibes at Rahul Gandhi and made fun of earthquake that hit Uttarakhand. It's sad to see our PM making such derogatory statements hurting sentiments of people."