Justice Aamir Farooq will announce the decision on the petition filed on May 15 last year stating that Sanjrani cannot become acting president because he did not meet the requirements set by the Constitution.
On February 14, the IHC had reserved its verdict in the case.
According to Article 49 of the Constitution, the Senate chairman becomes acting president in the absence of the head of state.
However, Article 41 states that the individual needs to be more than 45 years of age.
The petition pointed out that Sanjrani was 40 years old and did not meet the basic requirement to hold the office even in acting capacity.