Sheikh al Mufid wrote nearly 194 books and treatises, out of which few have survived passage of time, and meticulously planned destruction of the Shia resources. Among the surviving ones, we have his «AL AMAALI» which is also known as «AL MAJAALIS». His student al-Najashi has mentioned it as «AL AMAALI AL MUTAFARRIQAAT».
These were sessions held in the month of Ramadan where al-Mufid read the traditions giving the chain of narration ending up to himself and the students wrote them down. Those who were absent wrote down from the recording of their colleagues, and then got it ratified by reading the text over to him.
The session began in the month of Ramadan, 404 Hijra at the residence of one of his students Dhamrah Abul Hasan Ali b. Muhammad Ibn Abd al-Rahman al-Farsi who lived in Baghdad. It ended in the month of Ramadan 411 Hijra, just two years before his death. It has 42 sessions of varying durations. An interesting and informative read for all seekers of knowledge who want to learn and take lesson from history.