Does Islam confirm "the private ownership"?

Please, explain Imam's perception of "Ijtihad" and "Substantial Ijtihad"?

Imam cautioned while spending form public funding

The world religious and spiritual leader used to exercise extra-ordinary caution when it came to using public properties or permitting spending form public funds.

Imam Khomeini’s National Identification Card

The founder of the Islamic Republic used to observe the laws and regulations of the country after assuming responsibility as the leader of the Islamic revolution.

Imam Khomeini Delivered Advice to Saudi Delegation

Imam Khomeini, the founder of the Islamic Republic delivered special pieces of advice to a high-ranking visiting Saudi delegation.

Imam predicted bright future for revolution

The founder of the Islamic Republic had predicted a bright future for the Islamic-democratic system.

Imam Khomeini defended and promoted democracy

Imam Khomeini managed to hold historic referendum immediately following the revolution which was approved by majority of the voters who voted in favor of the Islamic-democratic system.

Imam Emphasized on Participation of People

The founder of the Islamic Republic frequently used to highlight the significance of participation of the mass public in all political, social, economic and cultural arenas.