Cairo - Grand Imam of Al-Azhar Dr Ahmed El Tayyeb greeted President Abdel Fattah El-Sisi, the Egyptian people and Arab and Islamic world on the advent of Eid Al-Adha (Greater Bairam). Furthermore, El Tayyeb called on the Arab and Islamic nations to stand united and put an end to divisions in order not to give a chance to those who seek to harm security and stability. El Tayyeb greeted all Muslims around the world on the occasion, wishing Egypt and the Arab and Islamic nation more progress, security and peace.