There is no transitive disease, no huma, no star promising rain, no safar.
Sahih Muslim Book 39, Hadith 146
← Previous Hadith This hadith has been reported on the authority of Zuhri with the same chain of transmitters.

Sahih Muslim Book 39, Hadith 145 Next Hadith → There is no transitive disease, no ill omen, no ghoul.

Note: The majority of scholars interpret this to mean that these things in and of themselves do not transmit or cause harm through supernatural or hidden means but that Allah is ultimately in control and any fearful superstition around these is false.

Sahih Muslim Book 39, Hadith 147