That which is correct in our view is what is authentically reported from him (صلى الله عليه وسلم) that he said: “There is no contagion” and that nothing will afflict a soul except what has been written for it.

As for the sick person coming close to the healthy person, then it does not necessitate ailment and sickness for the healthy person.

Save that it is not desirable for a person of health to be close to the leper and to [one with] an illness which the people dislike. Not because it is unlawful (ḥarām), but out of the precaution that a healthy person might think—in the case that he later got the disease—that his mixing with the [sick person] was the cause of what afflicted him.

This would then lead him to enter into what he (صلى الله عليه وسلم) prohibited and what he falsified from the affair of jāhiliyyah with respect to contagion.