Bukhari

Hadith Commentary:
(1)
The indication in the conformity of the medicine is that cauterization with fire is also legislated only when it is appropriate for the illness; therefore, it should also be applied after proper investigation.
(2)
The Messenger of Allah (sallallahu alayhi wa sallam) did not like cauterization; this indicates that the treatment of cauterization should only be done when no other medicine is effective and no relief is found through any other remedy, because cauterizing with fire causes the patient great pain.
(3)
The Messenger of Allah (sallallahu alayhi wa sallam) declared drinking honey to be a cure; these words correspond exactly with the title.
And Allah knows best.

Hadith Commentary:
The relevance of this hadith to the chapter is as follows: since cupping (hijama) has been established as the best treatment, applying it for headache will also be beneficial.
The prohibition regarding cauterization with fire is one of dislike (tanzihi), because in another narration, some Companions are mentioned as having used this treatment (see Hadith no. 671).

Hadith Commentary:
(1)
From this hadith, it is understood that cupping (hijamah) is an excellent treatment.
It is also very beneficial for headaches.
The Messenger of Allah (sallallahu alayhi wa sallam) suffered from migraine (shaqiqah).
On one occasion, at the place of Khaybar, he put a morsel of poisoned food in his mouth, due to which he would experience migraine.
He (sallallahu alayhi wa sallam) treated this by having cupping performed.
(‘Umdat al-Qari: 14/687) (2)
In a situation of necessity, it is permissible to treat by cauterization with fire.
He (sallallahu alayhi wa sallam) had cauterization performed on Sa‘d ibn Mu‘adh (radi Allahu anhu).
On this basis, his prohibition of it is to be understood as a discouragement (tanzihi), not as absolute prohibition.
And Allah knows best.

Hadith Commentary:
From this hadith, it is understood that to not like for any Muslim what the Messenger of Allah (sallallahu alayhi wa sallam) does not like is a requirement of love.

Hadith Commentary:
(1)
This hadith is extremely concise, because firstly, honey is not mentioned in it, and secondly, there is no statement about these remedies being suitable for the illness, whereas both of these are found in the hadith.
(Sahih al-Bukhari, Book of Medicine, Hadith: 5683)
(2)
From this, the permissibility of treatment by cauterization (using fire) is established, because there is healing in it, as the Messenger of Allah sallallahu alayhi wa sallam said.
Although he did not prefer this method, it is not necessary that what he did not prefer is not permissible.
For example, the flesh of the monitor lizard (sa’ndah) was not liked by him, but it was eaten in his presence. Then, he himself treated some of the noble Companions with this method, such as:
When Sa’d ibn Mu’adh radi Allahu anhu was wounded in the Battle of the Trench (Khandaq), the Prophet sallallahu alayhi wa sallam himself cauterized his median vein (akhal) with fire. (Sahih Muslim, Book of Peace, Hadith: 5748 (2208))
However, the virtue lies in not adopting this method of treatment; but if no other method proves effective, then there is no harm in adopting it, provided there is a definite hope of healing through it.
And Allah knows best.

Hadith Commentary:
Vocabulary of the Hadith:
(1)
Mahjam:
An instrument for sucking blood,
cupping glass.
(2)
Sharṭah:
Making an incision,
making a cut on the body for applying cupping.
(3)
Ladghah bin-nar:
Cauterization with fire.

Benefits and Issues: Imam Abu Abdullah al-Mazari has written that diseases are of four types:
damawi (related to blood),
safrawi (related to bile),
balghami (related to phlegm), and
sawdawi (related to black bile).
If they are damawi due to the predominance of blood, then their treatment is bloodletting, and if they are of the other three types, then their treatment is appropriate purgation
(inducing diarrhea).
Thus, the Prophet sallallahu alayhi wa sallam indicated towards purgative substances through honey, and towards bloodletting substances through cupping (hijamah), and as a last resort, mentioned cauterization. Hafiz Ibn Qayyim rahimahullah has written that, in reality, diseases are the result of the predominance of heat (hararah) or coldness (burudah).
If the disease is due to the predominance of heat, then blood should be let, whether by cupping or by opening a vein,
because in this way, excess material is removed and the temperament is cooled. If the disease is due to coldness, then it is necessary to warm the temperament, and honey accomplishes this. If it is necessary to expel cold material, then honey is a gentle and laxative (purgative)
substance. If the disease is chronic, then as a last treatment, it becomes necessary to expel the material of the disease through cauterization.
(Takmilah, vol. 4, pp. 336-337)
In any case, the Prophet sallallahu alayhi wa sallam did not like cauterization with fire and forbade the ummah from its general use,
because it is an extremely painful treatment and also disfigures the human body.
Therefore, it should only be used as a last resort and with the advice of an expert physician.
Nowadays, electric currents are used for this purpose, which do not produce the harmful effects of cauterization with fire.