Hadith 4:191
Abu Mu'awiyah narrated to us, from al-A'mash, from Muslim, who said: A man came to Ibn Abbas asking him about the *suhur* (pre-dawn meal). A man from those sitting with him said to him: "Eat until you are in doubt." Ibn Abbas said to him: "This one says nothing. Eat whenever you are in doubt until you are not in doubt."
حدثنا أبو معاوية عن الأعمش عن مسلم قال جاء رجل إلى بن عباس يسأله عن السحور فقال له رجل من جلسائه كل حتى لا تشك فقال له بن عباس ان هذا لا يقول شيئا كل ما شككت حتى لا تشك