Tha'labah bin Yazid al-Sa'di (may Allah have mercy on him) said: I heard Sayyiduna Ali (may Allah be pleased with him) say that the Messenger of Allah (peace and blessings be upon him) said: "There is no reality to Safar (the supposed ill omen of the month), nor is (taking ill omens from the bird called) hamah valid, and no sick person (by himself) makes a healthy person sick." Tha'labah (may Allah have mercy on him) said: I said: Did you hear this yourself? Sayyiduna Ali (may Allah be pleased with him) said: "Yes! My two ears heard it and my two eyes saw him (saying it)."
Hadith Referenceمسند أبي يعلى الموصلي / مسند علي بن أبي طالب رضي الله عنه / 430
Hadith Takhrij«قال سعيد بن محمد السناري: صحيح لغيره» «أخرجه مجمع الزوائد ومنبع الفوائد برقم: 8390، 8391، وأخرجه شرح معاني الآثار برقم: 7052، مسند ابویعلیٰ ترقیم الاثری: 425»