Hadith 17:916
Abu Bakr narrated to us, he said: Al-Fadl ibn Dukayn narrated to us, he said: Zuhayr narrated to us, from Suhayl, from his father, from Abu Hurayrah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Whoever sleeps while there is *ghamr* (grease or residue of meat) on his hand, and he has not washed it, then something befalls him, let him blame none but himself."
حدثنا أبو بكر قال حدثنا الفضل بن دكين قال حدثنا زهير عن سهيل عن أبيه عن أبي هريرة قال قال رسول الله صلى الله عليه وسلم من نام وفي يده غمر لم يغسله فأصابه شيء فلا يلومن إلا نفسه