Canonical and Chronological Letter Tables, Historical Initial Counts, and Composite Checkpoints

A reproducible census of exact written Sīn (س; Unicode U+0633) in the frozen Qur’an Study Arabic corpus, with canonical and chronological cumulative letter tables, Sūrah summaries, Allāh-filtered views, and historical initial-count comparisons.

Principal results

Across 6,346 textual records (6,234 numbered Ayat and 112 unnumbered Basmalahs), the exact Sīn total is 6,121: 6,009 numbered and 112 in Ayah 0. The letter occurs in 3,534 rows. The 29 initialed Sūrahs contain 2,861 Sīn. The five Sīn-initialed Sūrahs 26, 27, 28, 36 and 42 contain 94, 94, 102, 48 and 54 Sīn letters (392 collectively), exactly reproducing Rashad Khalifa’s reported figures. Neither 6,121 nor 392 is divisible by nineteen.

Composite-initial checks

The corpus reproduces three published calculations: Yā–Sīn at Sūrah 36, 237 + 48 = 285 = 15 × 19; ʿAyn–Sīn–Qāf at Sūrah 42, 98 + 54 + 57 = 209 = 11 × 19; and the Hā–Ṭā–Sīn–Mīm interlocking Sūrah group, 426 + 107 + 290 + 944 = 1,767 = 93 × 19. The historical Yā and Hā graphic conventions are identified separately from the exact-character Sīn count.

Supplemental Ahmed–Mahmoud checkpoints

For the five predefined Sīn-initialed Sūrahs, canonical number sum 159 = 3 × 53; adopted chronological-position sum 247 = 13 × 19; and Sīn frequency sum 392 = 4 × 98. Their mixed-measure sum 798 equals the historical combined initial-letter total for Sūrah 19. Q 61:6, containing أحمد, contains 6 Sīn and 13 Mīm letters, but Q 3:84 has the same split. Q 17:79 is documented as a nonmatch. These are exploratory relationships, not proofs of unique personal identity or commissioning.

Reproducibility and limits

The deposit includes 16 CSV research tables, the frozen Arabic source corpus, source/chronology/filter companion tables, a standard-library Python verification script, checksum manifest and methodology notes. Every Ayah 0 is retained, except that Q 1:1 is already numbered and the Basmalah within Q 27:30 is not duplicated. The raw Arabic is not normalized or amended. Sīn = Messenger is proposed as a contextual interpretation for later book analysis, not a literal meaning demonstrated by letter counts.

Author and citation

Mahmoud Ahmed. Sīn (س) in the Qur’an — Canonical and Chronological Letter Tables, Historical Initial Counts, Composite Checkpoints, and Ahmed–Mahmoud Supplemental Audit. QS-DATA-L-008, Version 1.0 (2026). DOI: 10.5281/zenodo.23750830