Bukhari

Hadith Commentary:
Harithi is a nisbah (attribution) to Harith.
Perhaps he began making these cloaks; in some narrations, it is "Khaybari."
In some, it is "Juni," which is a nisbah to Banu al-Jawn.
Hafiz said that the Juni cloak is most common here.
Thus, the correspondence with the chapter heading is established.
There are many benefits to possessing or wearing a black cloak, and the greatest benefit is that keeping such a cloak refreshes the memory of the Messenger of Allah (sallallahu alayhi wa sallam), which is the greatest felicity for us. Allahumma arzuqna, ameen.
Harithi is a nisbah to a cloth-maker named Harith.

Hadith Commentary:
(1)
"Khameesah" refers to a black cloak which is attributed to Harith. It is possible that this person from the tribe of Quda‘ah used to make such woolen cloaks. Some scholars have read it as "Juniyyah," which is attributed to Banu Jun, or its color was black and white, and on this basis it was called Juniyyah.

(2)
There are many benefits to this black woolen cloak:
The greatest benefit is that by keeping such a warm black cloak, the memory of the Messenger of Allah (sallallahu alayhi wa sallam) is revived.
Aishah (radi Allahu anha) states that she dyed a woolen cloak black for the Messenger of Allah (sallallahu alayhi wa sallam), and he wore it, but when he perspired in it and sensed the smell of wool, he removed it and cast it aside.
(Sunan Abi Dawud, Al-Libas, Hadith: 4074)

Hadith Commentary: Benefits and Issues: From this hadith, another method of the Prophet sallallahu alayhi wa sallam during the solar eclipse becomes apparent. It seems that the eclipse of the sun was not very severe. The Prophet sallallahu alayhi wa sallam began the prayer, and during it, he continued to raise his hands and glorify, praise, declare the oneness, and magnify Allah, that is: (Subhanallah, walhamdulillah, wa la ilaha illallah, wallahu akbar), repeatedly supplicating with these phrases. And the Prophet sallallahu alayhi wa sallam led a two-unit (rak‘ah) prayer in the usual manner of a regular prayer, and performed one bowing (ruku‘) in each unit. Therefore, he recited one surah in each unit, and the Prophet sallallahu alayhi wa sallam performed the second unit after the sun had become bright. Or, it could also mean that when the sun became bright, the Prophet sallallahu alayhi wa sallam had already recited two surahs and completed two units. It does not mean that the Prophet sallallahu alayhi wa sallam began the prayer after the sun became bright, as might be inferred from the apparent wording of the hadith, because in that case, there would be a contradiction between the beginning and the end of the hadith. In the beginning, it is stated that when I arrived, the Prophet was standing and praying, and from this hadith, it is understood that this eclipse was different from the previously mentioned eclipses, and this is also evidence for the multiplicity of eclipses.