Kumar, who held half an-hour long meeting with Governor Keshari Nath Tripathi at the Raj Bhavan here, told reporters that he will take oath as chief minister of Bihar on February 22 at 5 PM.
He said the Governor had asked him to prove majority on the floor of the house in three weeks time before March 16.
He was accompanied by the MLAs of JD(U), Congress, RJD, CPI and an independent legislator.
Kumar said his government would take a decision to call the new budget session of Bihar Assembly and fix a date for speech of Governor in the joint session.