Chapter: "Chapter on Laughter." Explanation of the hadith of Abu Hurayrah (may Allah be pleased with him): (Reduce your laughter, for excessive laughter kills the heart).

The Shaykh : The author returned to establishing a specific chapter on laughter to clarify what is wrong with laughter, meaning laughter without a valid cause, as we have explained regarding the error and deviation from the Shari'ah.
So he narrated in this chapter with a good chain of transmission.
From Abu Hurayrah, who said: The Prophet (peace and blessings be upon him) said: .
Then he also narrated from Abu Hurayrah, but with an authentic chain of transmission, from the Prophet (peace and blessings be upon him), who said: .
The difference between the two hadiths: The first hadith: It elevates and exalts the Muslim, commanding him to reduce his laughter. The second hadith forbids him from exaggerating in laughter, because if a person habituates himself to a little laughter, it leads to exaggerating in it. The hadith testifies that excessive laughter is one of the causes that kill the heart. And the meaning of the death of the heart, of course, is not the intended physical death, i.e., the medical death that means the heart's pulse stops and the person dies. Of course, this is not what is intended, because the heart has two functions: a function known by all people, even the disbelievers, and especially among them the doctors, which is that it is the cause of the body's life and that it is the natural pump that supplies the human being with this blood, which is the cause of his life in the estimation of Allah (Mighty and Majestic). This function is known by all people, as we said. And another function that is not known except by the Shari'ah, not known except by the people of the Shari'ah who hold fast to the texts of the Book and the Sunnah. This function is the human being's life from the intellectual and spiritual aspect. This life resides in this heart, not as a piece of flesh, but rather it is like the spirit deposited in this body, which no one knows today, and no one will ever know its essence and secret, as the Exalted said: . Similarly, this heart is the cause of this human being's life, an intellectual and spiritual life. A person may live a material life, either a natural life or a life of... because he lives a material life just as any animal walking on the face of the earth lives. But the intellectual and spiritual life is not lived except by one whose heart is alive with a spiritual and intellectual life. The spirit and the intellect: this hadith gives us that the heart is the cause of the human being's life, a spiritual life, and that there are material causes that put an end to this spiritual life which resides in the heart. And among these causes is excessive laughter .
Perhaps many Muslims, let alone others, do not know that the center of the intellect, i.e., understanding, is the heart, and they think that the center of the intellect is the brain. And what a negligence this is, because it has dominated many scholars, writers, and authors, let alone the masses of people. They all imagine that the center of understanding is this brain, and this is an error, because all the texts of the Shari'ah testify that the intellect and understanding are centered in the heart. Therefore, our Lord says: . Just as this ear is the instrument of hearing, so the heart is the instrument of listening and understanding. And for this reason, the hadiths came one after another confirming that this heart is the center of the human being's life in his understanding and in his spiritual life. And perhaps among them is the famous hadith: . So among the means that help to corrupt this heart and to kill it is excessive laughter. So the Muslim, and especially women, should not exaggerate in laughter, should not raise their voices with laughter, even among themselves, even if there is no strange man present. Women are more deserving of modesty and composure, and for this reason they were called "the veiled ones" in the past. But, unfortunately, this name has become a name without a name, with no existence in our women and daughters today, except for what is few and rare. So the ones most in need of reducing laughter are women, because the Messenger (peace be upon him) described them as "vessels," meaning that they are affected by the slightest thing, whether good or evil. They are more intense and quicker in their reaction than men. So if the Messenger (peace be upon him) informs us, and his information is truth and veracity, that excessive laughter kills the heart, then all Muslims, and women in particular, should reduce this laughter so that they may preserve the soundness of their hearts and not be exposed to any weakness in it or its death, may Allah forbid.