Tejashwi said the NDA won the assembly elections through "deceit".
In a bid to embarrass Narendra Modi and Amit Shah, Nitish Kumar has invited 'bujurg' Bharatiya Janata Party leader L K Advani to attend his oath-taking ceremony.
Nitish Kumar, who along with Rashtriya Janata Dal chief Lalu Prasad, steered the Grand Secular Alliance to a landslide mandate of over two-thirds majority in Bihar assembly poll, will be sworn in as Chief Minister on Novermber 20 for a third term along with his new cabinet.