A standoff appears to be looming in Egypt between the Supreme Constitutional Court, backed by the military, and President Mohammed Mursi.
Mr Mursi on Sunday ordered parliament to reconvene in defiance of a court ruling and the court in turn has now rejected that decree.
The Supreme Constitutional Court says the ruling it issued on 14 June, which led to the dissolution of parliament, is binding and not subject to appeal.
The speaker of the dissolved house has called on MPs to meet at 2pm on Tuesday.
However, army guards are no longer blocking members from entering parliament and the situation remains complex.
Because parliament has been dissolved, Mr Mursi was sworn in before the constitutional court rather than before MPs.
The Supreme Council of the Armed Forces said on Monday it was confident that "all state institutions" would respect the law and constitution.