A Commentary on the Treatise: Four Principles on Shirk:

Indeed, we praise Allāh for bestowing us with the speech (commentary)
to this treatise 'The Four Principles on Shirk' authored by al-Imām, the
Revivor Muḥammad bin ʿAbdul Wahhāb (May Allah have mercy upon him). Its significance is considerable because it distinguishes between true Islāmic monotheism and polytheism.
This treatise was titled The Four Principles because it contains four principles that distinguish the Believer of Islāmic faith from the disbeliever, the polytheist from the practit...