Since the "original" manuscript is not publicly available, researchers typically look for books about the science of Jafr or historical commentaries. JAFR - Encyclopaedia Iranica
– Shia chat groups and subreddits (r/Shia, r/EsotericIslam) offer English breakdowns of jafr calculations, often with worked examples for historical events. kitab al jafr english
Literally translating to "The Book of the Calfskin" or "The Book of the Container," Kitab al Jafr is believed by Twelver Shia Muslims to be a mystical scripture inherited from the Prophet Muhammad by his son-in-law, Imam Ali ibn Abi Talib. According to tradition, the book is not written on ordinary paper but on the white skin of a ram (or calf), rolled into a scroll, and stored in a leather pouch. Since the "original" manuscript is not publicly available,
– English summaries describe the book’s two main containers: Jafr al-Abyad (White Jafr – Qur’anic exegesis) and Jafr al-Ahmar (Red Jafr – warfare and death prophecies). According to tradition, the book is not written