Eid Ul-Fitr marks the end of the Islamic holy fasting month of Ramadan.
In separate messages, Firouzabadi also congratulated the military officials, ambassadors and military attachs residing in Iran of the Islamic countries on the auspicious event.
The senior military commander expressed hope that Iran would promote friendly ties with all Islamic states.
He further wished success and prosperity for Muslim nations and hoped peace and tranquility to the entire Islamic world.