The president has categorically and repeatedly stated that the government was functioning successfully and noticeable progress had been achieved on many fronts, an official statement issued in Islamabad on Sunday said.
Issuing the notices, Justice Chaudhry said the court would ascertain whether Sharif had been sent to Jeddah on his own or deported and whether the exit seal was stamped on his passport.
The bench last week said that the long drawn-out proceedings would end by July 20 and an order can be expected any time thereafter.
Supporters of President Pervez Musharraf and suspended chief justice Chaudhry Iftikar had a free run in Karachi.
Opposition parties observed a Black Day on Sunday, blaming the government for the violence that turned the city's streets into a battlezone.
The Dawn news channel quoted an Interior Ministry spokesman as saying that a suicide bomber had struck the meeting of the Islamabad District Bar Association.
Bhutto said militancy has grown so strong in Pakistan that it posed a challenge to the unity of the country.
A number of leaders and sympathisers, including former Inter Services Intelligence Chief Gen (Retired) Hamid Gul, protested against Hussain's house arrest, and were allowed to meet him.