Shimla, Aug 20 - The Bharatiya Janata Party (BJP) Thursday said the decision to expel senior leader Jaswant Singh was taken by the parliamentary board in view of the contents of his book which were contrary to the core ideology and beliefs of the party.

'The issue is not your right to author a book, the issue is the content of the book. No political party gives you the right to write against ideology of the party or to air your views publicly,' BJP general secretary Arun Jaitley told reporters here.

He was referring to Jaswant Singh's book, 'Jinnah -- India, Partition, Independence', in which he suggested that Pakistan's founder Mohammed Ali Jinnah had been unfairly demonised in India. The book was also mildly critical of the role played during India's partition by Sardar Vallabhbhai Patel, the country's first home minister.