Curiosity equals book sales. That equation seems to be at work here with copies of Jaswant Singh's “Jinnah: India – Partition – Independence” flying off shelves as people dig into their pockets to find out why the Bharatiya Janata Party ( BJP) expelled its veteran leader. The queues started soon after the party president Rajnath Singh, who is here with top leaders of the party for a three-day introspection session, announced the expulsion Wednesday morning. “Yesterday, I issued a statement about the BJP dissociating itself from Jaswant Singh's views. The party discussed the matter at the ‘chintan baithak' and it was decided to expel him,” Rajnath Singh announced, two days after the book's release in New Delhi that was boycotted by the party.