Translation:

1. Alif Lam Ra. (This is) a Book with verses basic or fundamental (of established meaning) further explained in detail from One Who is Wise and Well-Acquainted (with all things):

Notes (Tafseer)

1492. For the meaning of these Letters, see App. I.

1493. See n. 347 to iii. 7. Every basic principle is included in Allah's Revelation, and it is further illustrated and explained in detail.