بِسْمِ ٱللَّٰهِ ٱلرَّحْمَٰنِ ٱلرَّحِيمِ
IPSC Edition 2 · CRP-2026-03-20The Islamic Primary Source Corpus.
668,436
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
449,415
narrations
Across 61 collections 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.
Rigor at every stage.
3
Independent sources
18
Enrichment stages
135K+
Validation tests
SHA-256
Watermarked
Honest grading across 449,415 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.
What's new.
+35,774
documents added (632K → 668K)
99.4%
isnad/matn separation rate
57,218
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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بِسْمِ ٱللَّٰهِ ٱلرَّحْمَٰنِ ٱلرَّحِيمِ
Explore the corpus through Theo.
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Ask about any hadith, ruling, or scholar…449,415 graded hadith · 27,115 verified narrators · 95.2% Bukhari convergence