The spirit of the soul according to Al-Ghazali, Ibn Al-Jawzi and Ibn Qudamah:

Allah (Haza Wajal) says in the meaning of His Word: “He who was dead and whom We have brought back to life (by faith), bestowing on him a light by which he walks among the people, is he like one who wanders in the darkness without being able to come out? (Surat al-An'am, v.122).

He thus compared faith and Islam to the soul which gave life to the body, whoever is deprived of it is similar to the dead, even if he thinks he is alive.

Imam Al-Ghazali, may Allah have mercy on him, considered the condition of the Muslim community in his time and said: "As for the science of the path leading to the hereafter, on which the pious walked predecessors, and which Allah (Haza Wajal) named in his Book: understanding (fiqh), wisdom, knowledge, brilliance, light, guidance and righteousness, it is ignored and totally forgotten. This being a disastrous gash made to religion, and an obscure misfortune, I considered that I had to compose this important book in order to revive the sciences of religion, to unveil, to unveil the ways of past imams, and to expose the splendors useful sciences of the prophets and pious predecessors. This is what marked the start of his monumental work: Revivification of the sciences of religion.

Although his work has been controversial and criticized, scholars have not completely dismissed it, and many of them have endeavored to redact it. It is to this immense work that Imam Ibn Al-Jawzi and Ibn Qudamah have devoted themselves, one after the other, in order to keep only the quintessence. If Al-Ghazali endeavored to show what is the soul of Islam and faith, Ibn Al-Jawzi and Ibn Qudamah gave us access to the essence of the work: the spirit of blade.

This book is composed of the biography of our three authors followed by four quarters, which are composed of sub-themes:

- Concise Biography of Imam Al- Ghazali
- Concise Biography of Imam Ibn Al-Jawzi
- Concise Biography of Imam Ibn Al-Qudamah
- First quarter: Adorations
- Second quarter: Habits and customs
- Third quarter: Perditions
- Fourth quarter: What involves salvation