The resolution was jointly moved by Sohail Akbar and other PPP members in the backdrop of a recent demand by the MQM to create more administrative units in Sindh.
Earlier, the opposition staged a walkout after Deputy Speaker Shehla Raza did not allow Shahyar Mehar to move a resolution.
The dispute began on allotment of seats in the new assembly hall as the opposition objected that its members were not allotted seats together.
The opposition member and treasury benches exchanged heated words and the hall then echoed with slogans “Marsoon Marsoon Sindh Na Desoon”.
MQM members boycotted the session in protest against the arrest of its workers overnight.