The summit, hosted by Russian President Vladimir Putin, was attended by Brazilian President Jair Bolsonaro, South African President Cyril Ramaphosa and Chinese President XI Jinping.
The 12th BRICS summit, hosted by Russian President Vladimir Putin, was also attended by Chinese President Xi Jinping.
Modi on Monday left for Rwanda on the first leg of his five-day, three-nation tour of Africa that will also take him to Uganda and South Africa.
Essential to strike balance between speed, quality of growth, says Chinese President Xi Jinping at BRICS Summit
Jinping added that China would contribute a sizeable amount to the NBD project preparation facility to support the business operation in the long-term development of the bank.
Modi emphasised the need to accelerate track of cooperation in smart cities, urbanisation and disaster management.
Xi Jinping talked about adopting a holistic approach of terrorism that includes addressing symptoms and root causes.
PM Modi was the third leader to reach the convention centre, venue of the 9th BRICS Summit in this port city of China.
A day ahead of the BRICS summit in China, Prime Minister Narendra Modi on Saturday said he is looking forward to productive discussions and positive outcomes during the multilateral forum.