B90 How to Become a Key Towards Good

All praise is due to Allāh, the Lord of all that exists. I bear witness that none deserves to be worshiped in truth except Allāh alone with no partners and I bear witness that Muhammad is His slave and messenger (may Allāh send Salāh and peace upon him, his family, and his companions all-together).

As for what follows:

Verily, the subject matter of this treatise is extremely important and it is worthy of deep study and a good deal of time due to its magnitude, importance and urgent need.