Ain-i-Akbari was written by Abdul Fazl in1598 C.E. He had revised it five times to avoid any kind of errors. He collected and compiled all his information with an extra caution. He verified and Cross-checked all the oral testimonies before their inclusion in his book. In fact, he wanted to minimise the chances of transcriptional errors.

However many errors historians have found some problem in this book. First of all, they have found out many errors in totalling secondly, the quantitative data has not been uniformly collected from all the provinces. For examples, Abdul Fazl has not given the composition of Zamindars in Bengal and Orissa. Thirdly, he had not given any vital parameters in the determination of prices and wages. He based his assessment on the data that he got from Agra.

To get rid of these drawbacks, the historians use all documents that they found in Gujarat, Rajasthan and Maharashtra in the 17^th and 18^th centuries. They have also come across many documents of East India Company which throw a light on the agriculture of Mughal times.