What is the meaning of the letters at the beginning of some surahs of the Qur’an? There are 14 different individual letters. Is there any significance in that number?

The Arabic alphabet consists of 28 letters. Precisely half of these appear as
unattached letters at the beginning of surahs. Of those 14, seven comprise the half of the Arabic letters which have diacritical dots, while the other seven comprise the half of the Arabic letters which have no diacritical dot.

Over the centuries scholars have attempted to construct reasonable sentences from these
14 letters. All of these have appeared to be meaningless except for one – Sirat Ali Haqq Nomsekuh – which translated into English is, The Path of Ali is the true one to which we adhere.