Ahead of the Rajya Sabha vote on the controversial quota bill, SP member Ram Gopal Yadav in the upper house called for implementation of the Sachar Committee report which recommended reservation for Muslims.
Rajya Sabha Chairman Hamid Ansari asked him to raise the issue during zero hour and let question hour run smoothly.
But SP's Naresh Aggarwal asked its members to gather near the chairman's podium, following which the chair adjourned the house for half hour.
Similar scenes were seen in the Lok Sabha, where the SP led by its chief Mulayam Singh Yadav raised the issue of reservation in government job promotions.
SP members rushed towards the speaker's podium, raising slogans against the bill and disrupting question hour.
Speaker Meira Kumar appealed for peace and told the SP it would be given time to raise the matter during zero hour.
Parliamentary Affairs Minister Kamal Nath also tried to pacify SP members but the protests continued.
Finally, the speaker adjourned the house till 11.30 p.m. and then till noon. The house was again adjourned till 2 p.m. and later till 3 p.m. as similar scenes prevailed.
While the Bahujan Samaj Party (BSP) has been pressing the government to pass the bill, the SP has issued veiled threats saying it could reconsider its support to the ruling United Progressive Alliance (UPA) if the bill is passed.
Parliament has been disrupted frequently over the issue since the winter session started Nov 22.
