The book is essentially a "sounding board" for the Maliki school. Imam Sahnun would present hypothetical legal scenarios to Asad ibn al-Furat, who would then answer based on the principles of Imam Malik (founder of the Maliki school) and the opinions of his teachers, including Ibn al-Qasim (the most famous transmitter of Malik's views).
Al-Mudawwana is vast, typically spanning in modern printings. It follows the standard topical arrangement of fiqh books ( kitab ):
The title translates to "The Grand Cyclopaedia" or "The Great Compilation." It is a record of the legal opinions (fatwas) and methodologies of Imam Malik as transmitted by his student Ibn Al-Qasim.
You can find scholarly analysis of the text's formation in English, such as the thesis by Wesley Arnold Thiessen .
Translating 16 volumes of dense, technical legal Arabic is a monumental task. It requires not only linguistic fluency but also a deep understanding of the legal context and archaic terminology used in the 8th and 9th centuries.