The book "Observations on the Muslims of India: A Description of their Customs, Habits and Religious Opinions, obtained during twelve years' residence among them" was written by Mir Hasan Ali and Mrs. This work offers detailed observations on the culture and life of Muslims in India at that time. The authors share their impressions of communication with local residents, describe their manners, daily habits and religious beliefs. This book will be a valuable resource for those interested in the history and culture of India, especially the period of dominance of the British Raj.