President Rouhani made the remarks at the opening ceremony of the 30th International Islamic Unity Conference here on Thursday, according to ILNA.
The Great Prophet Muhammad (PBUH) taught the Muslims to be united, live in peaceful coexistence and have peaceful behavior towards each other, President Rouhani said addressing the International Islamic event.
'Nothing is worst than inflexibility and monopoly,' the Iranian President said.
Over 300 domestic and foreign guests, a number of Ulema from different countries and 220 prominent figures from across the Islamic World have participated in the international Islamic event.