If the Speaker of the Lok Sabha wishes to tender his resignation, then he has to address his letter to ----?

The president of India....u knw why ..;cos ....president of Pakistan would nt accept it.....president of india would also nt accept 'cos both are ladies present time.....(Meera Kumar & Pratibha Patil........kya chun chun k laayee hain Hamari Sonia Gandhi sabbko) LOL