The ruling on treating illness by drinking donkey milk

The questioner : Honorable Shaykh, may Allah reward you. The questioner says: In our country, many children suffer from a severe cough called al-qahdhd, al-qahld, yes. Al-qahdhd. Yes. Good. And they treat it here by drinking donkey milk. Thank you. Donkey milk. It resembles donkey milk, and it is a beneficial medicine for this disease. Is it permissible to use donkey milk? Please issue a ruling on this, and may Allah reward you.

The Shaykh : Good, this question, which they call al-qahdhd, is called al-shahak in our region of Najd, because the person gasps. It is said among the common people that the medicine for al-shahak is the milk of al-nahak. What is al-nahak?
The donkey. I mean, this is a rhyme that softens the tone somewhat, but this is not correct, because donkey milk, after the donkey was made forbidden, became forbidden. As for donkey milk before the donkey was made forbidden, it was lawful. Good, it was drunk and its meat was eaten. The donkeys were previously permissible and were made forbidden in the year of Khaybar.
After it was forbidden, it became among the impure things. Allah, Glorified and Exalted is He, . Someone might ask: How did this meat become forbidden and impure in the evening when it was lawful and good in the morning? Or how is it forbidden and impure today when it was lawful and good yesterday? We say that the ruling belongs to Allah alone. Allah, Glorified and Exalted is He, is the One who rules as He wills. He made this good meat from yesterday into impure meat today, and He has the right to do what He wills, Glorified and Exalted is He. So we say that donkey milk, after its meat was forbidden, is forbidden. And if it is forbidden, it cannot be a medicine, because Allah the Exalted did not make the healing for this Ummah in what He has forbidden for them. If there had been any benefit for the servants, Allah, Mighty and Majestic, would not have forbidden it. If someone says, as the questioner did, that he tried it and it proved beneficial, we say that this is a trial.
Like the fitnah of the people of the graves, who, when they are called to the owner of the grave, heal. So we say that if this matter is as the questioner said, then the healing occurred upon drinking it, not by means of drinking it. The conclusion is that drinking donkey milk for the purpose of seeking healing from the question is not permissible and is forbidden. What? It was not reported. The one who goes to extremes is destroyed.