An accountability court Judge Khalid Ranjh in Rawalpindi gave him complete exemption from appearing in court for future hearings of the case, Dawn online reported.
Next hearing in the case will take place on June 2. Court has also summoned the prosecution's witnesses to appear before it on the same day.
According to the reference, Zardari and his wife former assassinated Prime Minister Benazir Bhutto were accused of illegally acquiring their assets. The case was also tried in a Swiss court.
This was the first time that the former president and Pakistan People's Party (PPP) co-chairman appeared before the Rawalpindi accountability court judge since the National Accountability Bureau (NAB) reopened the five-year-old reference in April.