´Talq bin Ali narrated that :` The Messenger of Allah said: "Eat and drink, and do not be disturbed by the rising glow, eat and drink until the redness appears to you on the horizon."
Hadith Referenceسنن ترمذي / كتاب الصيام عن رسول الله صلى الله عليه وسلم / 705
Hadith Gradingالألبانی:حسن صحيح، صحيح أبي داود (2033)