A1L30M40R200. These are the signs of the book. What has been sent down to you from your Lord is the truth; but most of the people do not acknowledge.
Translation endnotes
[13:1] A1L30M40R200. These letters/numbers play an important role in the mathematical system of the Quran based on code 19. See 74:1-56; 1:1; 2:1; 13:38; 27:82; 38:1-8; 40:28-38; 46:10; 72:28.