The College of Islamic Sciences at the University of Karbala held a discussion for the master’s thesis submitted by student Mohammed Sajit Anad, titled:
“The Additional Narration of a Trustworthy Narrator in Hadith and Its Impact on Imami Jurisprudence.”

The study examines the issue of ziyādat al-thiqa (the additional narration of a trustworthy narrator), a precise and important topic that has received extensive attention in the hadith literature of both Sunni and Imami schools, though with differing levels of focus. The Sunni tradition has given this subject particular importance, treating it as a distinct category within the sciences of hadith and producing numerous specialized works on it.

In contrast, although the Imami school did not devote independent works exclusively to this issue, it remains present within hadith sciences and the principles of jurisprudence. The concept also appears under the section of al-mazīd in books of dirāyah, where an addition may originate from a trustworthy narrator or otherwise. The research revealed that this issue affects multiple areas within hadith studies—including weak narrations and hidden defects—which ultimately influence whether a narration is accepted or rejected.

The researcher highlighted the fundamental differences between the two schools, noting that the Imami tradition does not treat ziyādat al-thiqa as an independent category as the Sunni tradition does. He also discussed the differences between the Usuli and Akhbari schools within Imami thought and how these distinctions shape their methodological approaches to dealing with additional textual elements in narrations.

The thesis further indicated that the Sunni school generally adopts three approaches regarding this issue: unconditional acceptance, unconditional rejection, and a detailed (case-based) approach. As for the Imami school, the research concluded that the detailed approach appears to be the prevailing view.