Musannaf Ibn Abi Shayba 23:104

Abu Khalid al-Ahmar narrated to us, from al-A'mash, from 'Umarah bint 'Umayr, from Abu 'Ammar, from Hudhayfah, who said: "By Allah, a man may wake up in the morning having insight, then he reaches the evening and does not see with the edge of an eyelid."