'Sins' of the father did the son in, say our sources.

In other words, the reason why Jayant Sinha was shunted out from the finance ministry and dumped in civil aviation is because of his father, senior leader, Yashwant Sinha.

Our sources tell us that Prime Minister Narendra Modi tasked finance minister Arun Jaitley to break the news to his MoS Jayant Sinha and convince him to accept the civil aviation ministry.

Prime Minister Modi is upset with Yashwant Sinha for criticising the government over the Nuclear Suppliers Group exercise.

Sinha  had flayed the Narendra Modi government over its vigorous push to get NSG membership, saying there was no need for it as India stands to lose and not gain by becoming a member and alleged that people sitting in the government were misguiding it every day.

The BJP veteran, who has often been critical of the Modi government after being sidelined in the party, said India should not have gone to the elite grouping as an applicant and should not accept NSG membership as it has already got what it needs.

The son got demoted because of his outspoken father, say highly-placed sources.

Of course, there's the ToI report, which said that Jayant Sinha's tea party may have triggered his ouster. Sinha hosted a party at his home, where bank chiefs and finance ministry officials were invited. The report claimed that Punita Kumar Sinha, Jayant Sinhas wife, was present at the meeting. Punita is a well known investor and a fund manager. Jayant Sinha was also seen as someone who had strong views on several issues, such as getting NIIF to invest in a bank-driven stressed asset fund, which did not factor in political implications, the report said.