Sahih Muslim
The Book on Salutations and Greetings (Kitab As-Salam)
Book Number: 026 / Hadith Number: 5495
Usama reported Allah's Messenger (may peace be upon him) as saying: Plague is a calamity which was inflicted on those who were before you, or upon Bani Isra'il. So when it has broken out in a land, don't run out of it, and when it has spread in a land, then don't enter it.