Sahih Muslim Book 26, Hadith Number 5513.

Chapter : There is no infection, no evil omen, no Hama, no safar, no star promising rain, no ghoul and the ill should not go to those who are healthy.

Abu Huraira reported Allah’s Messenger (may peace be upon him) as saying: There is no transitive disease, no huma, no star promising rain, no safar.