Dozens of supporters of President Morsi have continued their protest outside the High Constitutional Court in Cairo for a third day.
Busloads of supporters reportedly arrived at dawn on Monday to join the protest.
The protest began on Saturday after President Morsi accepted the constitution and announced it would be voted on in a national referendum on 15 December.
Hundreds of protesters gathered to condemn the court which had been due to deliver its verdict on the constitutionality of the Shura Council (upper house of parliament) and Constituent Assembly on Sunday.
Protesters claimed the court's investigation was illegitimate because the president's constitutional declaration had made both bodies immune from dissolution.
There had been a mass protest by Islamist supporters of President Morsi outside Cairo University earlier on Saturday.
In response to the protest, the court postponed its verdicts and announced it would halt its work indefinitely.
The constitutionality of the Shura Council and the Constituent Assembly were being investigated after Egypt's parliamentary elections law was ruled unconstitutional.
The court had earlier ruled against the constitutionality of the lower house of parliament, leading to its dissolution.
On 22 November, President Mohamed Morsi issued a controversial constitutional declaration making the two bodies immune to dissolution and protecting his decisions from judicial appeal.
In response, judges declared a partial strike, saying the declaration infringed upon judicial authority.