President Pranab Mukherjee on Saturday congratulated Muhammadu Buhari on assuming office as Nigeria's president.
Mukherjee said: "On behalf of the government and the people of India and on my own behalf, it gives me great pleasure to convey to you warm greetings and hearty congratulations as you assume the office of president of Nigeria."
Buhari took oath on Friday.
"Your success in the presidential elections held in March this year is testimony to the endorsement, by the people of Nigeria, of your vision for a new era of peace, progress and stability in your country," he said in a statement.
He said: "India and Nigeria have a time-tested and robust bilateral partnership which has been cemented by our shared history of struggle against colonialism and apartheid. We look forward to working closely with you to further deepen the multi-faceted partnership between our two countries."