JD(U) member Ratnesh Sada, while participating in the debate during post-lunch session, made the remarks against Modi, prompting BJP members to rush to the Well of the House in protest.
NDA members shouted slogans against Sada for around 10 minutes, and Leader of Opposition, BJP's Prem Kumar, demanded that the member tender apology for his comment.
Amid pandemonium, Speaker Vijay Kumar Choudhary adjourned the House for 10 minutes.
"The ruling party was not ready for 'apology', instead they said the derogatory remarks have been expunged from the proceedings. We did not agree to the government's proposal and decided to boycott government's reply on Appropriation Bill," Kumar told PTI.
It has become the habit of ruling alliance to make derogatory remarks and the ruling party should control their MLAs from making such remarks, Kumar said adding that whether or not to continue the 'boycott' of the House will be decided at a late evening meeting by the party.