Having a Sound Creed Is the Foundation of the Religion
In the Name of Allāh, the Ever Merciful, the Bestower of Mercy
Having a sound creed is the foundation and the basis of the religion; therefore, whosoever takes creed lightly and is negligent about it is either:
 An ignorant man who does not know how to give daʿwah, so he follows everyone
 A person of desires and innovation who is evil and misguided
Source: Tabṣirah al-Khalaf, pg. 53.
Translated by: Musa Shaleem Mohammed