Both have been found guilty of conspiracy.
A designated Terrorist and Disruptive Activities (Prevention) Act court Thursday remanded extradited gangster Abu Salem and his alleged aide Riaz Siddiqui to judicial custody till March 1.
The Terrorist and Disruptive Activities (Prevention) Act has summoned actor Sanjay Dutt and 25 other accused in the 1993 serial bomb blasts to appear on Wednesday.
One of the accused, Qureshi, was found guilty on Monday of taking arms and ammunition training in Pakistan, apart from parking the bomb-laden van at Plaza.
Salem's confession describes the role played by Qayoom and Bilakhiya in arms distribution in furtherance to the 1993 bomb blast conspiracy, CBI said.
The summons were issued by designated Judge P D Kode, who had asked Sanjay and 25 other accused to appear before him for giving their attendance.
They have admitted their complicity and asked for leniency.
The matter was pending and would be heard on August 8. Besides, Salem was also required in Ajit Dewani and Pradeep Jain murder cases which are pending in other courts.
Another court remanded one of the primary accused in the 1993 Mumbai blasts case, Ejaz Pathan, to CBI custody till February 27.
Motorwala is facing the charge of conspiracy in the 1993 serial blasts along with other accused. He is also facing the charge of sending co-accused to Pakistan en-route Dubai for training at the instance of prime conspirator Dawood Ibrahim.
Yakub Memon, who was hanged on Thursday for his role in the 1993 Mumbai serial bomb blasts, had reacted with an angry outburst saying "innocent people are being called terrorists" when a TADA court in Mumbai had pronounced him guilty on September 12, 2006.