Husayn bin 'Abdur Rahman al-Salmi حصين بن عبد الرحمن السلمي · Fasting (Kitab Al-Siyam)

The Messenger of Allah (ﷺ) said: Eat and drink; let not the white and ascending light prevent you from (eating and drinking); so eat and drink until the red light spreads horizontally.

I saw Ibn Umar holding his beard with his hand and cutting what exceeded the handful of it. He (Ibn Umar) said that the Prophet (ﷺ) said when he broke his fast: Thirst has gone, the arteries are moist, and the reward is sure, if Allah wills.