"We must eradicate this", added Nursultan Nazarbayev.
The two-day summit is scheduled to take place on September 10-11 in Astana.
The Turkish president said that the Muslim world needs to work together for the plight of Myanmar Muslims.
Heads of state and government from around twenty-two Muslim states and delegates from around fifty-seven states will attend the summit.
According to schedule, the Asian Inter-Parliamentary Forum for Science, Technologies and Innovations includes seven thematic sessions. The gathering is expected to discuss and adopt OIC's 10-year action plan on science and technology, dubbed "OIC Science, Technology and Innovation Agenda 2026".
President Hamid will make a statement at the summit where he will call for creating a new story of development for the wellbeing of the Muslim Ummah through active cooperation in science and technology.
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In a separate meeting with his Uzbek counterpart, Shavkat Mirziyoyev, also on Sunday, President Rouhani said Iran sees no obstacle in the way to deepen its bilateral relations with Uzbekistan as "a friendly country".
"The occasion will provide opportunities to review bilateral relations and exchange views on regional and global issues of mutual interest".
The latest figures showed that almost 300,000 Rohingyas have fled the restive Myanmar state of Rakhine over the past two weeks.
Pakistan president Mamnoon Hussain and his Turkish counterpart Recep Tayyip Erdogan on Sunday discussed the issue of Rohingya Muslims being persecuted in Myanmar.
"President Mamnoon Hussain thanked the Government of Turkey for its consistent support for the Kashmir cause and reiterated Pakistan's support to Turkey on the Cyprus issue".