بِسْمِ ٱللَّٰهِ ٱلرَّحْمَٰنِ ٱلرَّحِيمِ
IPSC v3.176.1 · June 2026The Islamic Primary Source Corpus.
836,952
structured, attributed, watermarked documents
Explore through Theo Full IPSC site — methodology, collections, research, citation →The foundation.
القرآن الكريم
Quran
6,236
ayat
Complete Quranic text with full Arabic vowelization, byte-verified against the Tanzil.net reference standard.
الحديث النبوي
Hadith
617,931
narrations
Across 128 works spanning 13 tiers of scholarly authority with structured narrator chains and attributed grades.
علم الرجال
Rijal
197,868
assessments
Narrator assessments from 20 classical biographical dictionaries spanning 600 years of hadith scholarship.
علل الحديث
Ilal
14,917
defect analyses
Chain defect analyses from 8 specialist works documenting hidden transmission problems in hadith narrations.
Try it now.
Live query against the same Azure AI Search indexes Theo uses at chat.theogrid.ai. Filter by collection, grade, or content type. No signup, no signin — the public corpus is genuinely public.
Rigor at every stage.
3
Independent sources
18
Enrichment stages
135K+
Validation tests
SHA-256
Watermarked
Honest grading across 617,931 hadith.
22% not graded — rather than force a classification, the corpus openly marks these narrations as ungraded. This reflects scholarly honesty: acknowledging the limits of current verification rather than overstating certainty.
Every chain for a statement, in one view.
Evidence Map assembles every chain for a given statement across all 128 works into one view: cross-collection corroboration, per-position narrator confidence, verbatim critic verdicts per source, and the computed grade with every override. A chain fails on its weakest link; a statement strengthens on its strongest corroborating chain.
What's new.
+168,516
documents added (632K → 837K)
99.4%
isnad/matn separation rate
480,350
hadith with attributed grades
110,655
structured narrator chains
3
new rijal works (Ibn Ma'in)
1,228
Asbab al-Nuzul entries
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A weekly hadith verification, Quranic analysis, or fiqh comparison — direct from the IPSC corpus.
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بِسْمِ ٱللَّٰهِ ٱلرَّحْمَٰنِ ٱلرَّحِيمِ
Explore the corpus through Theo.
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Ask about any hadith, ruling, or scholar…617,931 hadith cataloged · 480,350 graded (77.7%) · 95.8% Bukhari convergence