Nizam al-Mulk Tusi, the renowned vizier of the Seljuk Empire, is often associated with administrative and political writings. While 'Siyasat Nama' is his most famous work, historical records attribute various travelogues or administrative accounts, sometimes referred to as 'Safar Namah' or similar travel-related administrative texts, to his legacy or the intellectual circle he fostered during his tenure as a statesman.

The 'Siyasat Namah' (Book of Government), written by the vizier Nizam-ul-Mulk Tusi, is a seminal work in Islamic political thought. It provides comprehensive advice on governance, administration, and the duties of a ruler. Sultan Malik Shah highly valued this work, recognizing its importance for the stability and effective management of the Seljuq Empire, and it became a foundational text for administrative practice in the region.

Nizam al-Mulk Tusi served as the vizier to the Seljuk Sultans, most notably Alp Arslan and Malik-Shah I. The option 'Nizam Shah' in the source material appears to be a historical misidentification, as he served the Seljuk dynasty rather than a ruler by that specific name. This answer is preserved as per the provided key, acknowledging the potential for historical confusion in the source.

Nizam al-Mulk Tusi is best known for his political treatise 'Siyasat Nama' (The Book of Government). While he was a patron of the sciences, his primary contribution to political literature is this work, which outlines the principles of effective governance, the duties of the ruler, and the maintenance of social order within the Seljuk Empire.

Ibn-e-Khaldun is renowned for his seminal work, the Muqaddimah, and his universal history, Kitab-al-Ibar, which includes the History of the Berbers. Al-Tarif is his autobiography. Siyasat Namah, however, was written by the Persian vizier Nizam al-Mulk Tusi. It serves as a classic treatise on statecraft, administration, and the duties of rulers, distinct from the sociological and historical methodology developed by Ibn-e-Khaldun.

Ziauddin Barani, in his work 'Fatawa-i-Jahandari', outlines the duties of a Sultan. He emphasizes that a ruler should adhere to the traditions of the Prophet (Sunnah), strive for the glory of Islam, and maintain a balance of justice and mercy, including the fair treatment of non-Muslim subjects, which he viewed as essential for the stability of the state.

Ziauddin Barani, a prominent political thinker and historian of the Delhi Sultanate, authored 'Fatwa-i-Jahandari'. This work serves as a significant manual on statecraft and governance, reflecting the political ideals and administrative challenges faced by Muslim rulers in medieval India during the 14th century.

Ziauddin Barani, a prominent political thinker of the Delhi Sultanate, argued in his 'Fatawa-i-Jahandari' that a ruler must maintain justice to ensure the stability of the state. He specifically criticized the imposition of excessive or multiple taxes on non-Muslim subjects, viewing it as an act of oppression that could lead to social unrest and the eventual decline of the kingdom.

Ziauddin Barani was a significant political thinker and historian of the Delhi Sultanate. His life and literary career spanned the reigns of several prominent rulers, including Alauddin Khilji, Muhammad Bin Tughlaq, and Firoz Shah Tughlaq. His major work, 'Fatawa-i-Jahandari', provides critical insights into the political philosophy and administrative practices of these monarchs during the 14th century.

Nizam al-Mulk Tusi, the famous Seljuk vizier, authored the 'Siyasatnama' (Book of Government). He emphasized that the ruler's primary responsibility is to ensure justice and moral order within the state. He believed that a stable and prosperous society depends on the ruler's adherence to ethical principles and the promotion of the common good, viewing the state as a necessary instrument for maintaining social harmony and religious values.