Swamy also termed the Congress as a "dharmashala" of one family on the day when Rahul filed his nomination for the party president's post.
"Rahul Gandhi was compelled to wear Janeu because of his father. Otherwise, he will not be able to perform last rites," Swamy said, while questioning why the Congress leader was not saying that he was a Hindu.
Swamy said, "When he accepts that he is a Shivabhakt, what is the problem in accepting that he is a Hindu. We will accept it. Your (Rahul) associate asked for the register meant for non-Hindus making entries and then you make claims that you are a Shivabhakt (devotee of Lord Shiva)."
The BJP leader reaffirmed that the construction of the Ram temple in Ayodhya would begin soon and it would be ready to receive devotees by next Diwali.
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"I have seen that our pleas are stronger than the opposition. They were defeated in the Allahabad High Court. They have now filed an appeal but they did not present new facts. So, I believe that we will win the court battle," he said.
Asked about the extradition of liquor baron Vijay Mallya, Swamy said, "The government is making efforts to bring him back to India. The government will not spare anybody."
Referring about to the GST, Swamy said that after the new tax regime was implemented, the GDP has started an upward movement.
Asked if the GST would adversely affect the BJP's chances in the Gujarat polls, he said everybody was saying that demonetisation would harm the party's prospects. But, on the contrary, the BJP won 75 per cent seats in Uttar Pradesh assembly elections, he added.