Combining the hadiths denying contagion with the hadiths advising caution against it

Question:
How do we reconcile the statement of the Messenger , and his saying (peace and blessings be upon him) that one should not be harsh with a mosque?

Answer:
There is no contagion and no bad omen, alongside his saying (peace and blessings be upon him) . The scholars reconciled the two hadiths by explaining that the meaning of his saying (peace and blessings be upon him) "there is no contagion" refers to what the people of the pre-Islamic age of ignorance (jahiliyyah) believed, namely that disease spreads by itself, by itself, without the will of Allah (Glorified and Exalted is He).
As for his saying that one should not bring a sick person to a healthy one, its meaning is caution. This is its meaning: caution and taking the protective measures against what is to be avoided, because disease may spread by the will of Allah (Glorified and Exalted is He). So disease and contagion occur by the will of Allah (Mighty and Majestic), and the treatment for that is to take the protective measures, because one does not want to bring a sick person to a healthy one. The Messenger (peace and blessings be upon him) ordered that whoever hears of plague or epidemic in a country should not enter it or go to it, and whoever is in the country when the plague breaks out should not leave it, because if he leaves it, he may transmit this disease, by the permission of Allah, to the healthy people.
This is called quarantine. This was brought by the Shari'ah, because it is taking the means, taking the protective means against what is disliked. So the result is that his saying (peace and blessings be upon him) "there is no contagion" means what the people of the pre-Islamic age of ignorance (jahiliyyah) believed, that disease spreads by itself without the will of Allah. As for the hadiths that indicate contagion, the meaning of that is what occurs by the will of Allah (Glorified and Exalted is He). This is treated by protecting against it, taking the protective measures against its occurrence, and if it occurs, by taking the means to remove it, from the permissible medicines. Good. Allah. The one who is afflicted with it.
Due to the generality, meaning if the plague breaks out in a country, one does not leave in fear, one does not flee from it, because this indicates weakness in his faith. He should remain in the country itself, and if he is afflicted, this is also regrettable so that he does not harm the people.