This is a part of "Indian Vaccine Diplomacy" - #VaccineMaitri (Vaccine Friendship)
Indian newspapers reported -
"India will on Thursday despatch 500,000 doses of Covishield vaccines to Sri Lanka as grant assistance under its “Vaccine Maitri” initiative, which has already delivered nearly five million doses to seven countries in the neighbourhood."
Since the launch of the Vaccine Maitri (Vaccine Friendship) initiative on January 20, India has provided vaccines to Bhutan (150,000 doses), the Maldives (100,000 doses), Bangladesh (two million doses), Nepal (one million doses), Myanmar (1.5 million doses), Seychelles (50,000 doses), and Mauritius (100,000 doses).
Commercial supplies of Covishield have been sent to Brazil, Morocco (two million doses each) and Bangladesh (five million doses), and more supplies are planned for South Africa and Saudi Arabia.