Explanation of the author's statement: "… Chapter Two: What the Message of the Prophet (peace and blessings be upon him) contains of clarifying the truth in the fundamentals and branches of religion"

The Shaykh :"Chapter Two: The Message of the Prophet (peace and blessings be upon him)" What did this great message contain? There is no doubt that the Messenger (peace and blessings be upon him) came to reform creation, so his message must contain everything that reforms creation in their religion and their worldly affairs. It contains two things: beneficial knowledge and righteous action. The evidence is the saying of Allah the Exalted If I told you, "I sent so-and-so to you with a letter," what is the thing sent? The letter. Muhammad (peace and blessings be upon him) was sent with guidance and the religion of truth, so the thing sent is guidance and the religion of truth. Guidance comes from the root of guidance, which is the opposite of misguidance, so it is beneficial knowledge. How many great sciences are there in the Message of the Prophet (peace and blessings be upon him)? Second, righteous action, which is the religion of truth, because "religion" means action, and this is from the category of adding the described to the attribute. So "the religion of truth" means the religion that is the truth, just as one says "the university mosque," and what does that mean? It means the mosque that gathers [people], so it is from the category of adding the attribute to the described, or the described to the attribute? Here? The described to the attribute. So "the religion of truth" means the action that is the truth. Thus, the Message of the Prophet (peace and blessings be upon him) contained these two matters: beneficial knowledge and righteous action, because they are reports, stories, and news about future matters, all of which are beneficial knowledge. And also actions, which the accountable person performs by doing or leaving, and they are righteous actions. For this reason, the author said: "So guidance is beneficial knowledge, and the religion of truth is righteous action", and righteous action must include two things: sincerity for Allah and following the Messenger of Allah (peace and blessings be upon him). The evidence is the saying of Allah the Exalted "And sincere to Him in religion, inclining [to Him]." This is the sincerity, and "inclining" is the following. And Allah the Exalted said And he was asked, al-Fudayl ibn 'Iyad (may Allah have mercy on him) was asked, "What is righteous action?" He said: "What is pure and correct, pure and correct", and "pure" means sincere for Allah, and "correct"?
The student: ...

The Shaykh : No, in accordance with the Sunnah. And indicating this is also the saying of the Messenger of Allah (peace and blessings be upon him) to the end of it, and his saying This is regarding the following. Good.
And his saying "following his Messenger (peace and blessings be upon him)" includes the sunnahs and the obligatory duties, but the sunnahs are in the way of perfection and the obligatory duties are in the way of compulsion.