A book whose signs are detailed, a compilation in Arabic for a people who know.
Translation endnotes
[41:3] H8M40. This combination of two letters/numbers plays an important role in the mathematical system of the Quran based on code 19. For the meaning of these letters, see 1:1; 2:1; 40:1; 13:38; 46:10; 74:1-56. Also, see 43:3 and 11:1.