Explanation of the author's statement: "3- Committing a sin decreases faith according to its type, its magnitude, the negligence toward it, and the strength or weakness of the impulse leading to it."

The Shaykh :"Third: Committing a sin decreases faith according to its type, its magnitude, the negligence toward it, and the strength or weakness of the impulse leading to it.
As for its type and magnitude, the decrease in faith due to major sins is greater than the decrease due to minor sins, and the decrease in faith due to killing a soul that is inviolable is greater than the decrease due to taking protected wealth". Why? Because the inviolability of the soul is greater than the inviolability of wealth.
"And the decrease due to two sins is greater than the decrease due to one sin" because this is more.
"As for negligence toward it, if a sin is committed by a heart that is negligent toward the One it has disobeyed and weak in fear of Him, the decrease in faith due to it is greater than the decrease if it is committed by a heart that reveres Allah the Exalted and is strong in fear of Him, but the sin slipped out of him".
This is correct. It is possible for two men to commit a sin that is identical in type, quantity, and manner. But one of them committed this sin negligently, not caring about it, while the other committed it while revering it and fearing its consequences. In that case, the decrease in faith with the first one is what? It is more severe and greater. The difference between them is clear.
He said: "As for the strength of the impulse, if a sin is committed by one in whom the impulses toward it are weak, the decrease in faith due to it is greater than the decrease if it is committed by one in whom the impulses toward it are strong. Therefore, the arrogance of the poor man and the fornication of the old man are greater sins than the arrogance of the rich man and the fornication of the young man, as in the hadith:

There are three to whom Allah will not speak and at whom He will not look on the Day of Resurrection, and whom He will not declare pure, and they will have a painful punishment.

ثلاثة لا يكلمهم الله ولا ينظر إليهم يوم القيامة ولا يزكيهم ولهم عذاب أليم

Sunan Abi Dawud 4087Sahih (Al-Albani)

Among them are mentioned

The gray-haired fornicator and the poor arrogant man

الأشيمط الزاني والعائل المستكبر

because of the weakness of the impulse toward that sin in them".