Musnad Ahmad 154:12

Abu al-Yaman narrated to us, Shu'ayb narrated to us, from al-Zuhri, he said: Al-Sa'ib ibn Yazid, the son of the sister of Namir, narrated to me, that the Prophet, peace and blessings of Allah be upon him, said: "There is no contagion, no Safar, and no Hamah."