Article 10 of CoI : Article 10: Continuance of the rights of citizenship.

Explanation using Example

Example 1:

Rajesh was born in India in 1980 and has always lived in India. According to the provisions of Part II of the Constitution of India, he is deemed to be a citizen of India. In 2023, a new law is passed by the Parliament that changes certain criteria for citizenship. However, since Rajesh is already a citizen under the existing provisions, he continues to be a citizen of India despite the new law, unless the new law specifically states otherwise.

Example 2:

Anita was born in India in 1990 to Indian parents and has an Indian passport. She moved to the United States for higher studies and has been living there for the past 10 years. Despite her long stay abroad, she is still considered a citizen of India under the provisions of Part II of the Constitution. If the Indian Parliament enacts a new law that affects citizenship status, Anita will continue to be a citizen of India unless the new law explicitly revokes her citizenship.