The premier primary historical source for Mughal agrarian society is the Ain-i-Akbari ("Institutes of Akbar"), completed in 1598 by Akbar's court historian and confidant, Abu'l Fazl:
- The Ain forms the third volume of the grand imperial history, the Akbarnama. It is a comprehensive administrative and statistical gazetteer detailing royal court etiquette, military organization, provincial geography, revenue statistics, crop yields, and Hindu philosophy.
- Structure of the Ain (5 Books / Daftars):
- Manzil-abadi: The imperial royal household, harem, mint, and kitchen.
- Sipah-abadi: Military and civil administration, mansabdars, and imperial stipends.
- Mulk-abadi: The crucial agrarian section containing fiscal revenue tables, crop rates, and quantitative surveys of all 12 imperial provinces (Subas).
- Fourth & Fifth Books: Religious, philosophical, and literary traditions of India, concluding with sayings of Emperor Akbar.
- Historiographical Limitations: The Ain is heavily focused on the imperial center and northern provinces, glossing over distant regions like Bengal and the Deccan; calculations contain minor arithmetic transcription errors; and it reflects a top-down royal court ideology.