"We have learned with sadness the passing of one for the country's renowned human rights activists and former judge of the Supreme Court honourable judge Moosa. His passing is an enormous loss to South Africa of one our seasoned human rights activists. We wish to extend our heartfelt condolences to [the] Moosa family and relatives, our prayers and thoughts are with them during this difficult period. May his soul rest in peace," Zuma said in a statement.
Moosa retired as a judge of the Western Cape High Court in 2011.
Zuma said Moosa would be remembered for his immense contribution in promoting and protecting human rights during his tenure as "Supreme Court judge" as well as the founding and executive member of the National Association of Democratic Lawyers where he chaired its human rights committee.
Moosa will be buried in Mowbray in Cape Town on Sunday afternoon.