Al-Shaykh al-Saduq held 97 sessions, transcripts of which were compiled in 13 months and these sessions except few ones of them (22, 23, 24, and 26) were held every Tuesday and Friday. They began on Rajab 18, 367/March 1, 978 when al-Shaykh al-Saduq had traveled to Mashhad, Iran and finished on Sha'ban 18, 368/March 21, 979. There is only a short pause in compiling the book when he was on the way to Tus.

Session 29 was held on Muharram 8 (second Friday of Muharram)/August 16, 978 and thus, it begins with the story of the martyrdom of Imam al-Husayn (a) and finished it in the sessions 30 and 31. Session 26 was held on the day of Eid al-Ghadir/July 27, 978 and thus discusses the merits of this day. This indicates an advantage of this book among other books of Amali that it paid attention to time and place in mentioning hadiths.

Additionally, he has mentioned the merits of the month of Rajab and the month of Ramadan and the rewards for fasting in these months. When he arrived in Nishapur, he narrated a hadith on the merits of Imam al-Rida (a).

This book contains a group of hadiths from the Prophet (s) and the Ahl al-Bayt (a) on different topics such as the conduct of the Prophet (s), the event of Isra' and ascent of the Prophet (s), supplications and advice, merits and virtues of the Ahl al-Bayt (a) which include historical, moral, and ideological issues.