Kitab al-Jami' takes its place at a specific moment in Ibadi Oman's legal history, one modern scholarship reads as the point where the school's jurisprudence matured from inherited hadith into a working legal system. Ibn Baraka wrote in the tenth century, roughly two hundred years after al-Rabi ibn Habib had already fixed the school's hadith corpus, and something like a century and a half before the later classical compendia, such as the nineteen volume Bayan al-Shar' produced by Muhammad ibn Ibrahim al-Kindi, that went on to build directly on Ibn Baraka's own foundation.
His achievement was methodological rather than narrative. Where the Musnad preserves what earlier authorities said, Kitab al-Jami' argues for how a jurist should reason from that inheritance to new rulings, treating prophetic tradition as the shared foundation of law and of scriptural interpretation alike. That distinction, between a school's source material and its method for using it, is not a minor technical point. Ibadi fiqh remains a living legal tradition in Oman rather than a historical curiosity, still drawn on today in matters of personal status alongside the country's general civil law, and the systematic method Ibn Baraka helped establish in the tenth century is part of why that continuity was possible. A hadith collection alone, however authoritative, does not by itself supply the reasoning a court needs; that had to be built separately, and Kitab al-Jami' is where Omani Ibadism built it.