In the beginning of the 9th volume of Darʾ al-Taʿāruḍ, Shaykh al-Islām Ibn Taymiyyah speaks of the differing among the sects regarding how knowledge, acquaintance and guidance is acquired, is it through reason, or is it through revelation...
Supplication and seeking refuge with Allāh is more useful and more beneficial than treatment with medications, and the effect and influence of that on the body is greater than the effect of bodily medicines.
When speaking about the fiṭrah and the ḥadīth, “Every child is born upon the fiṭrah”, Muslims often say that a child is born a “Muslim”, with the meaning of being upon Islām the religion.
This book explains the reality of Tawḥīd al-Ulūhiyyah, or al-ʿIbādah (strict, pure monotheism in worship) and makes mention of its rulings, limits, conditions, excellence, evidences, foundations...
A believing Muwaḥḥid, in his beliefs, feelings, emotions, speech and behaviour is governed by optimism, hope, certainty and reliance and he pursues his beneficial interests in this manner.
The first obligation upon the servants is the worship of Allāh. As for knowing him, then they know him through the fiṭrah, the intellects, creational evidences and Qurʾānic evidences.
From the greatest of their principles is being deceived by the majority. They employ it as proof for the correctness of a thing and they use it as evidence for the futility of a thing.