In the constitution :

• The Nomination of the Crown Prince comes from the 1962 Constitution of the State of Kuwait in the fourth article which States that (Kuwait is a hereditary Emirate, the succession to which shall be in the descendants of the late Mubarak Al-Sabah).
• The Crown Prince is appointed within a year of the inauguration of the Amir. His nomination as a Crown Prince comes according to The Amiri decree upon the nomination of His Highness the Amir of Kuwait and the approval by the National Assembly members in a special session with approval by the majority of the members.
• In case no designation is achieved in accordance with the foregoing procedure, the Amir shall then nominate at least three of the descendants of the late Mubarak Al-Sabah. The National Assembly shall then select one whom they will pledge allegiance to as Crown Prince.
• The Crown Prince must be an adult sane and legitimate son of Muslim parents.
• The Constitution regulates the low of emirate succession by a special law that must be issued within a year of the new Amir's inauguration .

In the law of state heredity :

• The law of State Heredity issued on 30 January 1964, emphasizes in Article 6 that the Crown Prince is appointed according to the procedure mentioned in Article 4 of the Constitution and is given the title “ His Highness the Crown Prince”.
• The Crown Prince must be a sane adult and legitimate son of Muslim parents, not younger than 30 years old when he pledges allegiance.
• Article 7 in the law of state heredity also stipulates that the Crown Prince acts as the Amir of Kuwait’s deputy in perusing his constitutional powers in case of the Amir of Kuwait’s absence out of the country, according to the conditions and situations mentioned in articles 61, 62, 63 and 64 of the Constitution.
• The Amir of Kuwait has the power to ask for the assistance of the Crown Prince in any matter related to the powers of the head of the constitutional state.