A united opposition on Thursday forced an adjournment of proceedings in the pre-lunch session in the Rajya Sabha as they sought to raise allegations of fraud against the Adani group.

Vice President Jagdeep Dhankhar rejected notices under rule 267 seeking setting aside of the business of the day to take up a discussion on listed issue.

Unhappy with the ruling, MPs from the Congress and other opposition parties protested, forcing adjournment of the proceedings till 2 pm.