Kumar was here to pay tributes at the "mahaparinirvan" temple of Bhagwan Budha this morning.
Arriving as per the schedule by a special helicopter at 7.30 this morning to a rousing reception by his partymen, Nitish Kumar took part in rituals at the temple and also made donations to Baudh bhikshus.
The Bihar chief minister who had to start Sewa Yatra from Gopalganj district later left around 9.30am.
Regarding speculation on Narendra Modi as BJP's prime ministerial candidate, he refused to reply.