Explanation:

Original Jurisdiction
As per article 32, Supreme Court is the guardian / protector of fundamental rights and any person whose fundamental rights are violated can directly approach the Supreme Court for remedy. Supreme Court has from time to time interpreted the fundamental rights and has protected the Citizens of India from any unconstitutional legislation which breech their fundamental rights. Any matter regarding the enforcement of Fundamental Rights comes under the Original Jurisdiction of the Supreme Court. Apart from this, Supreme Court is the Highest Interpreter of the Constitution and tribunal for final settlements of the disputes between Center and States as well as States and States. Supreme Court has original Jurisdiction in matters related any dispute between:

Government of India and one or more states
Government of India and State(s) on one side and State(s) in other side
State(s) and State(s)
The dispute should involve a question whether of law or fact on which depends existence of a legal right which the court is called upon to determine.