Al Jazeera's Hoda Abdel-Hamid reports from Cairo, where thousands have gathered to rally in support of Mohamed Morsi, Egyptian president, at Cairo University.<br /><br />The marches, scheduled to begin shortly after the afternoon prayer, saw "Islamist and nationalist revolutionary forces" set off from mosques in Cairo and head for Al-Nadha square, said the Freedom and Justice Party, the Brotherhood's political wing.