Article 302 of CoI : Article 302: Power of Parliament to impose restrictions on trade, commerce and intercourse.

Explanation using Example

Example 1:

The Parliament of India passes a law that restricts the movement of certain agricultural products between states to prevent the spread of a plant disease. For instance, if there is an outbreak of a pest in Maharashtra that affects mango crops, the Parliament may impose restrictions on the trade of mangoes from Maharashtra to other states to protect the agricultural interests of the entire country.

Example 2:

To ensure public health and safety, the Parliament enacts a law that restricts the sale and transportation of fireworks during certain times of the year. For example, during the festival of Diwali, the Parliament may impose restrictions on the interstate trade of fireworks to prevent accidents and reduce pollution levels, thereby serving the public interest.