Additional Chief Judicial Magistrate Shantanu Tyagi ordered to register the FIR against the former Union minister.
The Delhi High Court found that the petitioner had even not made the author of the book and publication house a party in the petition.
'People who are incensed should write their own chapter': Delhi HC dismisses plea against Salman Khurshid's book
Counsel for the petitioner contended that the book, in its chapter called 'The Saffron Sky', compared Hindutva to radical groups like ISIS and Boko Haram, which could harm public peace.
Those arrested are identified as Chandan Singh Lodhiyal (27), Umesh Mehta (30), Krishna Singh Bisht and Rajkumar Mehta (29), Deputy Inspector General of Police (DIG) Nilesh Anand Bharne said.
Passing the order, ACJ Preeti Parewa stated that injunction on the book would lead to hardship for the publishers and also curtail the right of speech and expression of the author.
The suit, filed by Hindu Sena President Vishnu Gupta, has sought direction to the authorities concerned to stop the publication, circulation, and sale of the book for allegedly hurting the sentiments.
Mahant Ravindra Puri, president of the Akhil Bharatiya Akhada Parishad (ABAP), said he would consider further steps after reading Khurshid’s book Sunrise Over Ayodhya: Nationhood in Our Times.
The actor had, in a recent interview, remarked that India got its freedom in 2014 when Prime Minister Narendra Modi came to power and what it got in 1947 was "bheekh" (alms or handout).
According to the petition, in his book, Khurshid has compared Hindutva to radical jihadist groups like ISIS and Boko Haram and it also cited a chapter from the book.
T Raja Singh Lodh claimed Salman Khurshid and Congress leaders were also spreading false information about Hindus staying all over the world, thus endangering their life.
Sharing pictures and videos of the incident, Khurshid wrote on Facebook, "I hoped to open these doors to my friends who have left this calling card. Am I still wrong to say this cannot be Hinduism?"
Hindutva depicts the way of life of Indian people, their state of mind and ethos.
BJP spokesperson Sambit Patra on Friday said that the Congress party's attack on Hinduism is not a coincidence but an experiment.
Khurshid has sparked controversy by reportedly comparing a 'robust version' of Hindutva to the jihadist Islam of terror groups such as ISIS and Boko Haram in his book.
Nothing wrong in comparing parties with groups killing people in the name of religion: Mehbooba Mufti
She accused the RSS and the BJP of hijacking 'Hindutva and Hinduism' and said Sanatan Dharma does not teach communalism.