Muwatta Imam Malik (Riwayat Ibn al-Qasim)

Aamir bin Sa’d bin Abi Waqqas (may Allah have mercy on him) heard his father (Sayyiduna Sa’d bin Abi Waqqas, may Allah be pleased with him) asking Sayyiduna Usamah bin Zaid (may Allah be pleased with him): "What have you heard from the Messenger of Allah (peace and blessings be upon him) about the plague?" So Usamah bin Zaid (may Allah be pleased with him) replied: The Messenger of Allah (peace and blessings be upon him) said: "The plague is a punishment (disease) that was sent upon a group of the Children of Israel or upon people before you. So if you hear of its (the plague's) occurrence in a land, do not go there, and if it (the plague) comes to your land, do not leave it fleeing from it." Malik said: Abu al-Nadr said (in the narration from Aamir): "It should not drive you out by forcing you to flee."