How to reconcile the hadith (There is no contagion and no bad omen) with the hadiths indicating that bad omens are established, along with the consensus of doctors on the establishment of contagion?

The questioner : It is established from the Prophet (peace and blessings be upon him) that he said: As explained in the hadith that ... and he says that there is no contagion, and many doctors and those similar to them say that contagion is established, like medicine and others. We would like you to direct us regarding this hadith: is it to be understood in its literal sense such that it negates contagion fundamentally, or not?

The Shaykh : No, the hadith does not negate it, and let us leave the doctors alone, because what came from the Messenger (peace be upon him) regarding the establishment of contagion is sufficient for us regarding the opinions of doctors. The hadith in reality, if understood correctly and precisely, contains a negation of contagion and an establishment of contagion. The established in the hadith is not the negated in it, and the established in the hadith aligns with hadiths that established contagion. Consequently, what doctors say about some contagious diseases does not contradict the hadith at that time. The explanation of this is what the Messenger (peace be upon him) said: One of the Bedouin Arabs present understood that his saying (peace be upon him): is a negation of contagion absolutely. This is an understanding that some scholars inherited, so they negated contagion absolutely based on the first part of the hadith. But if we follow the narration of the hadith and find that that Bedouin Arab understood the same understanding i.e., absolutely, based on this understanding, a problem arose for him, so he raised it to the Messenger (peace be upon him). The answer came to him establishing contagion. That man said: "O Messenger of Allah, we see the scabby camel enter among the healthy camels and infect them." The Messenger (peace be upon him) did not say to him, "This is a mistake, this is an illusion, and this is from the beliefs of the pre-Islamic age." Rather, he acknowledged it and drew his attention to what is called by some expressions the cause of causes, which is Allah (Mighty and Majestic). He said to him: So here there is contagion, but O Bedouin, O Arab, go back. This camel you saw enter ... the first one in which Allah created the contagion. So the Messenger (peace be upon him) in reality, with this hadith, invalidates a pre-Islamic custom and also invalidates a medical contagion in this time, because doctors, especially the disbelievers among them, when they establish contagion, do not link it to the will and decree of Allah. No, meaning they make the causes everything. As for these causes, they may fail or be delayed by the will of Allah (Mighty and Majestic), the Creator of causes and effects. This is what they do not think about. So the doctors today, especially the disbelievers among them, have fallen into the same illusion that the people of the first pre-Islamic age fell into. From here, he (peace be upon him) said to invalidate this illusion: So when this negation was opposed to what was in the minds of the Arabs in the pre-Islamic age, and he brought up what he saw with his own eyes, the Messenger did not say to him, "No, you are mistaken, you are wrong." But he drew his attention to the fact that this contagion you see is by the creation and decree of Allah, and not that this camel, the animal afflicted with scabies for example, by its power and will and decree infects the healthy camels. No, it is not so. So this hadith, as we said earlier, negates a contagion and establishes a contagion. It negates the pre-Islamic contagion and establishes the Shari'ah contagion. From here came hadiths confirming this second meaning, i.e., there is contagion by the will and decree of Allah, and that does not contradict the Muslim avoiding it by taking the means. As came in Sahih Muslim that a leper man came to pledge allegiance to the Messenger (peace be upon him), and he said to him: And he refused to shake his hand as he used to shake the hands of other people. This is from the category of taking the means, but the contagion is by the will of Allah. And with this amount, it is sufficient, and praise be to Allah, Lord of the worlds.
Abu Layla : May Allah reward you, our Shaykh.

The Shaykh : And to you.
Abu Layla : May Allah grant you health.

The Shaykh : May Allah forgive you.