Samajwadi Party patron Mulayam Singh Yadav, Shiromani Akali Dal chief Sukhbir Singh Badal and actor Sunny Deol were among the leaders who took oath as members of 17th Lok Sabha on Tuesday.
Accompanied by his son and Samajwadi Party president Akhilesh Yadav, an ailing Mulayam, 79, was brought to the House in a wheel chair and was allowed to take oath on priority from his seat due to health considerations.
 
There was loud applause when BJP MP Om Birla, who is the NDA's nominee for Lok Sabha Speaker's post, entered the House and later when he got up to take oath.
The formal proceedings were peppered with some slip-ups, banter and slogans as members were administered oath on the second day of the maiden session.
Dressed in jeans, white shirt and blazer, Deol, who is a first-time MP, took oath in English amid cheers and slogans like 'Bharat Mata ki Jai' from the treasury benches.
The BJP MP from Gurdaspur smiled and quickly rectified his mistake after he said "withhold the sovereignty and integrity of the country" instead of "uphold the sovereignty and integrity of the country".
Aam Aadmi Party's lone MP Bhagwant Mann was greeted with raillery by members of treasury benches as he ended his oath with the slogan 'Inqalab Zindabad'.
Badal concluded his oath with Sikh religious chant of 'Wahe Guruji ka Khalsa, Wahe Guruji ki Fateh".