Alif, Lam, Mim. (These are the names of three letters from the Arabic alphabet, probably indicating that this inimitable Revelation, the Qur'an, is made of this Arabic alphabet. Only Allah Knows their meaning here)
A. (Alef) L. (Lam) M. (Meem). The Surah opens with letters from the Arabic alphabet to draw attention to the miracle of the Quran, though written in the people's tongue cannot be emulated