Silsilah as-Sahihah 226 — No contagious disease; reality of "safar"

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "There is no contagious disease, nor is there any bad omen, and the month of Safar is not unlucky, nor does the owl (have any reality)." A Bedouin said: "Then how is it that a camel, when it walks in the sand like a deer (i.e., is healthy), but when a mangy camel mixes with it, it also gets mange?" The Prophet (peace and blessings be upon him) said: "(Well, tell me this,) who gave the first camel mange?"