Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates from the Noble Messenger (peace and blessings be upon him) that he (peace and blessings be upon him) said: "Disease is not contagious, the month of Safar is not an evil omen, and no owl is an evil omen." Sayyiduna Abu Hurayrah (may Allah be pleased with him) said: A Bedouin said: What about the camels that are healthy like gazelles, and then a camel with mange mixes with them and makes them mangy too? The Messenger of Allah (peace and blessings be upon him) said: "Then who gave the disease to the first one?"
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 14235