The oath was administered by Rajya Sabha Chairman C P Radhakrishnan in his chamber at a brief ceremony. The Chairman later welcomed him as a member of the Upper House and also on his return in Parliament.

Kumar took the oath in Hindi in the presence of Union Minister J P Nadda, who is also leader of the house, Finance Minister Nirmala Sitharaman, Panchayati Raj Minister Rajiv Ranjan Singh, Minister of State for Agriculture and Farmers Welfare Ram Nath Thakur and Minister of State for Law and Justice Arjun Ram Meghwal.

Bihar deputy chief minister Samrat Chaudhary was also present at the oath-taking.

JDU leader and party's working president Sanjay Kumar Jha, Congress chief whip in Rajya Sabha Jairam Ramesh, besides BJP MP and former union minister Rajiv Pratap Rudy and BJP chief whip in Lok Sabha Sanjay Jaiswal, were among those present during the oath-taking.

"Vice President of India and Chairman, Rajya Sabha, Shri C. P. Radhakrishnan, administered the oath to Shri Nitish Kumar as an elected Member of Rajya Sabha, from Bihar, at Parliament House today," the Vice President's office said on X, while sharing pictures of the oath-taking.