Prime Minister Narendra Modi on Thursday met Iranian President Hassan Rouhani on the sidelines of the BRICS and SCO summits.
Modi, who met with Russian President Vladimir Putin and Chinese President Xi Jinping, held his first bilateral talks on Thursday with Rouhani.
The talks with Rouhani come as the five permanent members of the UNSC and Germany and Iran are thrashing out details of an agreement to curb Tehran's nuclear programme in Vienna.
"Advancing a significant partnershp. PM @narendramodi meets President @HassanRouhani on sidelines of BRICS/SCO Summits," tweeted external affairs ministry spokesperson Vikas Swarup.
Earlier, he interacted with Indian CEOs and finance minister Arun Jaitley.
"BRICS for Business. Indian CEOs interact with PM @narendramodi and FM @arunjaitley first thing in the morning," the MEA spokesperson said.
Modi is in Ufa to attend the Seventh BRICS summit and the 15th SCO summit. India is set to be made permanent member of the Shanghai Cooperation Organisation.
The theme of this summit is ' BRICS partnership: A powerful factor for Global Development', which covers both political and economic issues. However, the emphasis is on economic cooperation.
The Prime Minister will also be participating in the meeting of the Shanghai Cooperation Organisation (SCO).
The SCO summit is likely to see India, which is currently an observer of the grouping, acquire full membership.
China and India should work together to build a closer, and more comprehensive partnership among the BRICS countries, Chinese President Xi Jinping said.
Xi made the remarks on Wednesday when meeting with Modi in Ufa, ahead of two multi-lateral summits, Xinhua reported.
The Chinese president recalled his meeting with Modi in May in the Chinese city of Xi'an, where the two leaders reached important consensus on enriching the bilateral strategic partnership and forging a closer development partnership.
The meeting sent positive signals to the international community that the two major developing nations are committed to cooperating for common development, said Xi.
The agreements reached back then are now being translated into steady progress in bilateral cooperation in such areas as parliamentary exchange, railway, industrial parks and smart cities, Xi said.
The president called on the two countries to make concerted efforts to maintain the positive momentum in the development of bilateral ties and open new prospects for mutually beneficial cooperation.
On border issues, Xi called on the two sides to properly manage and control their differences, and jointly safeguard peace and security in the areas.
China and India should also make joint efforts to push forward the development of the Asian Infrastructure Investment Bank, the BRICS New Development Bank and the Bangladesh-China-India-Myanmar economic corridor, said Xi.
In recent years, India and China have further expanded their trade cooperation and made steady progress in the areas of science and technology, outer space and infrastructure, Modi said.
It is the fourth bilateral meeting between the two leaders since their first in Fortaleza, Brazil, last July. In September 2014 and May 2015, Xi and Modi visited each other's country, respectively.