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.
قَالَ رَسُولُ اللَّهِ ﷺ كُلُوا وَاشْرَبُوا وَلاَ يَهِيدَنَّكُمُ السَّاطِعُ الْمُصْعِدُ فَكُلُوا وَاشْرَبُوا حَتَّى يَعْتَرِضَ لَكُمُ الأَحْمَرُ