Silsilah as-Sahihah 222 — No contagious disease; reality of "safar"

It is narrated from Sayyiduna Sa’ib bin Yazid bin Akht Numair, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, said: "No disease is contagious, nor is there anything in Safar, nor is there any reality in the benefit or harm of owls (etc.)."