370. Temporary provisions with respect to the State of Jammu and Kashmir

(1) Notwithstanding anything contained in this Constitution,—

(a) the provisions of article 238 shall not apply now in relation to the state of Jammu and Kashmir;

(b) the power of Parliament to make laws for the said state shall be limited to—

(i) those matters in the Union List and the Concurrent List which, in consultation with the Government of the state are declared by the President to correspond to matters specified in the Instrument of accession governing the accession of the State to the Dominion of India as the matters with respect to which the Dominion Legislature may make laws for that State; and

(ii) such other matters in the said Lists as, with the concurrence of the Government of the State, the President may by order specify.

Explanation: For the purpose of this article, the Government of the State means the person for the time being recognized by the President on the recommendation of the Legislative Assembly of the State as the Sadr-i-riyqsat (now Governor) of Jammu and Kashmir, acting on the advice of the Council of Ministers of the State for the time being in office

(c) the provisions of article 1 and of this article shall apply in relation to that State;

(d) such of the other provisions of this Constitution shall apply in relation to that State subject to such exceptions and modifications as the President may by order specify:

Provided that no such order which relates to the matters specified in the Instrument of Accession of the State referred to in paragraph (i) of sub-clause (b) shall be issued except in consultation with the Government of the State:

Provided further that no such order which relates to matters other than those referred to in the last preceding proviso shall be issued except with the concurrence of that Government.

(2) If the concurrence of the Government of the State referred to in paragraph (ii) of sub-clause (b) of clause (1) or in the second provision to sub-clause (d) of that clause be given before the Constituent Assembly for the purpose of framing the Constitution of the State is convened, it shall be placed before such Assembly for such decision as it may take thereon.

(3) Notwithstanding anything in the foregoing provisions of this article, the President may, by public notification, declare that this article shall cease to be operative or shall be operative only with such exceptions and modifications and from such date as he may specify:
Provided that the recommendation of the Constituent Assembly of the State referred to in clause (2) shall be necessary before the President issues such a notification.

Firstly according to this article, except for defence, foreign affairs, finance and communications, Parliament needs the state government's concurrence for applying all other laws. Thus the state's residents live under a separate set of laws, including those related to citizenship, ownership of property, and fundamental rights, as compared to other Indians.
Secondly Under Article 370, the Centre has no power to declare financial emergency under Article 360 in the state. It can declare emergency in the state only in case of war or external aggression. The Union government can therefore not declare emergency on grounds of internal disturbance or imminent danger unless it is made at the request or with the concurrence of the state government.

And therefore In exercise of the powers conferred by clause (1) of article 370 of the Constitution, the President, with the concurrence of the Government of the State of Jammu and Kashmir made a series of 50 orders, 3 in 1950, 1952 and 1954 respectively and other 47 Presidential orders have been issued between 11 February 1956 and 19 February 1994, making various other provisions of the Constitution of India applicable to Jammu and Kashmir. All these orders were issued with the 'concurrence of the Government of the State' without any Constituent Assembly.

Article 35 A is the result of the 1954 order.