"Unity and companionship among Muslims is an urgent obligation," Ayatollah Khamenei said, addressing participants in the 30th International Koran Competitions in Tehran on Saturday.
He pointed out that massacre, bloodshed, blind terrorism and its related catastrophes as well as the opportunities created for the occupying Zionist regime are all outcomes of division and difference in the Islamic Ummah.
"Today is the day of test for the Muslims and Islamic states, and Muslim nations should be completely vigilant," the Iranian Supreme Leader cautioned.
Ayatollah Khamenei warned of the West's campaign against Islam and the Muslim world, and said the western enemies are showing their hostility towards Muslims very openly, "thus, the Islamic Ummah should reinvigorate its intrinsic ability and power factors, and one of the most important factors in this regard is unity, integration and focus on commonalities".
In relevant remarks earlier this year, Ayatollah Khamenei warned Muslim nations about the plots hatched by enemies to sow discord in the Islamic community.
Addressing a group of Iranian officials and the foreign participants of the 26th International Islamic Unity Conference in Tehran in February, Ayatollah Khamenei felicitated birthday of Prophet Mohammad (PBUH) and stated that unity among the Islamic community was the main mission of the Holy Prophet.
The Leader pointed to the wave of the Islamic awakening in the Muslim World, and reiterated that the world arrogance targeted the Islamic Awakening movements and aims to divide the Muslims pitting them against each other.
"Therefore, the main duty of the elites in the Muslim world is to help expose the enemies' plots and take serious efforts to materialize the motto of Islamic unity," the Leader underlined.