Speaking in a local religous ceremony, he underlined the need for unity among followers of various Islamic sects and said religious disputes and sectarian violence endanger international security and stability.
The official warned about provocative measures by extremist groups and said Muslims should be vigilant towards such moves.
So-called anti-ISIL coalition, led by Washington, is not capable of defeating terrorists in Iraq and Syria, he added.
The ISIL Takfiri terrorists currently control parts of Syria and Iraq. They have threatened all communities, including Shiites, Sunnis, Kurds, Christians and Ezadi Kurds, by continuing their atrocities in Iraq.
Senior Iraqi officials have blamed Saudi Arabia, Qatar, and some Persian Gulf Arab states for the growing terrorism in their country.
The ISIL has links with Saudi intelligence and is believed to be indirectly supported by the Israeli regime.