The accused were presented in the court of Duty Judge Raja Jawad Abbas.
Hussain was arrested by the National Accountability Bureau (NAB) team during a raid in Islamabad.
On July 1, Raja Pervaiz Ashraf was formally charged in the reference.
The accused were presented before the court of Judge Muhammad Bashir.
The PML-N leader is accused of financial irregularities in LNG case.
The former premier was presented before the court of Judge Muhammad Bashir.
All unauthorized persons were banned from entering the court premises to avert the occurrence of any mishap.
Seventeen other accused have been named in the reference along with Zardari.
Security around the Judicial Complex was tightened.
“You are hereby informed to appear before the accountability court on July 19”, the summons read.