Article 7 of CoI : Article 7: Rights of citizenship of certain migrants to Pakistan.

Explanation using Example

Example 1:

Ravi was born in India and lived there until March 1947. After the partition, he migrated to Pakistan. According to Article 7 of the Constitution of India, Ravi is not considered an Indian citizen because he migrated to Pakistan after March 1, 1947. However, if Ravi decides to return to India and obtains a permit for resettlement or permanent return from the Indian government, he will be considered an Indian citizen as if he had migrated to India after July 19, 1948.

Example 2:

Fatima was born in India and moved to Pakistan in April 1947. She lived in Pakistan for several years but decided to return to India in 1950. She applied for and received a permit for permanent return from the Indian authorities. Under Article 7, Fatima is now considered an Indian citizen because she returned to India with the proper permit, and for the purposes of citizenship, it is as if she migrated to India after July 19, 1948.

Example 3:

Ahmed migrated from India to Pakistan in June 1947. He did not return to India and did not obtain any permit for resettlement or permanent return. According to Article 7, Ahmed is not considered an Indian citizen because he migrated to Pakistan after March 1, 1947, and did not return with the necessary permit.

Example 4:

Sita was born in India and migrated to Pakistan in May 1947. In 1951, she decided to return to India and applied for a permit for resettlement. She received the permit and moved back to India. Under Article 7, Sita is considered an Indian citizen because she returned to India with the appropriate permit, and for citizenship purposes, it is as if she migrated to India after July 19, 1948.