FINANCE, PROPERTY, CONTRACTS AND SUITS
Article 289: Exemption of property and income of a State from Union taxation
(1) The property and income of a State shall be exempt from Union taxation.
(2) Nothing in clause (1) shall prevent the Union from imposing, or authorising the imposition of, any tax to such extent, if any, as Parliament may by law provide in respect of a trade or business of any kind carried on by, or on behalf of, the Government of a State, or any operations connected therewith, or any property used or occupied for the purposes of such trade or business, or any income accruing or arising in connection therewith.
(3) Nothing in clause (2) shall apply to any trade or business, or to any class of trade or business, which Parliament may by law declare to be incidental to the ordinary functions of Government.
About Constitution of India
WE, THE PEOPLE OF INDIA, having solemnly resolved to constitute India into a SOVEREIGN SOCIALIST SECULAR DEMOCRATIC REPUBLIC and to secure to all its citizens: JUSTICE, social, economic and political; LIBERTY of thought, expression, belief, faith and worship; EQUALITY of status and of opportunity; and to promote among them all FRATERNITY assuring the dignity of the individual and the unity and integrity of the Nation; IN OUR CONSTITUENT ASSEMBLY this twenty-sixth day of November, 1949, do HEREBY ADOPT, ENACT AND GIVE TO OURSELVES THIS CONSTITUTION