Chapter on the Dislike of Conversation After the Last Night Prayer: The intended meaning is conversation that is permissible at other times, where doing it and leaving it are equal.

The reader: In the name of Allah, the Most Gracious, the Most Merciful.
Praise be to Allah, Lord of the worlds, and may prayers and peace be upon our Prophet Muhammad, and upon his family and all his Companions:
He said -may Allah have mercy on him-: "Chapter on the Dislike of Conversation After the Last Night Prayer:
The intended meaning is conversation that is permissible at other times, where doing it and leaving it are equal. As for conversation that is forbidden or disliked at other times, it is more forbidden and more disliked at this time.
As for conversation in good, such as discussing knowledge, the stories of the righteous, noble character traits, conversation with a guest, and with one seeking a need, or the like, there is no dislike in it; rather, it is recommended. Likewise, there is no dislike in conversation due to an excuse or an unexpected occurrence.
Abu Burzah (may Allah be pleased with him) reported:

The Messenger of Allah (ﷺ) disliked going to bed before the 'Isha' (night) prayer and indulging in conversation after it.

أن رسول الله صلى الله عليه وسلم كان يكره النوم قبل العشاء والحديث بعدها

Riyad as-Salihin 1746

Agreed upon by al-Bukhari and Muslim.
And from Ibn 'Umar (may Allah be pleased with them both):

That the Messenger of Allah (peace and blessings be upon him) prayed the last night prayer in the last part of his life, and when he finished the prayer, he said: "Do you see this night of yours? Indeed, in a hundred years, not one of those who are on the face of the earth today will remain."

أن رسول الله صلى الله عليه وسلم صلى العشاء في آخر حياته، فلما سلَّم قال : أرأيتكم ليلتكم هذه ؟ فإن على رأس مائة سنة لا يبقى ممن هو على ظهر الأرض اليوم أحد

Agreed upon by al-Bukhari and Muslim.
And it was narrated from Anas (may Allah be pleased with him):

That they waited for the Prophet (peace and blessings be upon him), and he came to them near the middle of the night and prayed with them, meaning the last night prayer. He said: Then he delivered a sermon to us and said: "Be aware that the people have prayed and then slept, and you will continue to be in prayer as long as you wait for the prayer."

أنهم انتظروا النبي صلى الله عليه وسلم، فجاءهم قريباً من شطر الليل فصلى بهم ، يعني العشاء ، قال : ثم خطبنا فقال : ألا إن الناس قد صلوا ثم رقدوا، وإنكم لن تزالوا في صلاة ما انتظرتم الصلاة

Narrated by al-Bukhari".

The Shaykh : In the name of Allah, the Most Gracious, the Most Merciful:
The author -may Allah have mercy on him- said in his book *Riyad al-Salihin*: "Chapter on the Dislike of Conversation After the Last Night Prayer":
Then he mentioned, may Allah have mercy on him, that conversation is divided into three categories:
A category that is disliked and forbidden, a category that is recommended, and a category that is permissible:
As for the disliked and forbidden, it increases in dislike and prohibition if it is after the last night prayer.
As for the permissible, it is what the Prophet (peace and blessings be upon him) used to dislike after the last night prayer.
As for the recommended, it is recommended and does no harm, even if it is after the last night prayer.
As for the first: it is like conversation in backbiting, talebearing, lying, listening to amusement and singing, and watching what is not permissible to watch. This is forbidden at all times, and its sin increases if it is after the last night prayer, because it is a time when permissible speech is disliked, so how about the forbidden and the disliked?!
The second category: idle talk, which is not forbidden, not disliked, and not recommended. This is most of people's talk. The Prophet (peace and blessings be upon him) used to dislike it after the last night prayer. This is because if a person talks after the last night prayer, the session becomes long, then his sleep is delayed, so he becomes lazy about standing in night prayer and about the dawn prayer. And whatever leads to negligence in a prescribed matter is disliked.
As for the recommended: it is engaging in knowledge, whether by reading, memorizing, or discussing; conversation with a guest to make him comfortable and honor him with conversation; and conversation with family to unite their hearts, and the like of that.
Likewise, the occasional conversation that is not constant, all of this does no harm. Rather, it is recommended if the intention is to achieve good.
Then the author mentioned hadiths: The hadith of Abu Burzah (may Allah be pleased with him): : This is because sleeping before the last night prayer leads to laziness when one gets up to pray, and one might fall into deep sleep and delay the prayer from its time. Therefore, the Prophet (peace and blessings be upon him) used to dislike sleeping before the last night prayer, so that the person would be active. As for drowsiness, this is not by the person's choice and does no harm.
The point of this hadith is his saying: : For the Prophet (peace and blessings be upon him) disliked conversation after the last night prayer. As for if it is in good, there is no harm in it. For this reason, the Prophet (peace and blessings be upon him) used to converse with his companions after the last night prayer, advise them, and explain to them (peace and blessings be upon him). This is not harmful. And success is from Allah.