The excellence of suhur and delaying it as long as one does not fear the approach of dawn

Riyad as-Salihin (The Meadows of the Righteous)

by Imam Nawawi

221. Chapter: The excellence of suhur and delaying it as long as one does not fear the approach of dawn

1229. Anas reported that the Messenger of Allah, may Allah bless him and grant him peace, said, "Have suhur. There is blessing in suhur." [Agreed upon]

1230. Zayd ibn Thabit said, "We used to have suhur with the Prophet, may Allah bless him and grant him peace. Then he stood up for the prayer." Anas said, "I said, 'How long was there between the adhan and suhur?' He said, 'Enough to recite fifty ayats.'" [Agreed upon]

1231. Ibn 'Umar said, "The Messenger of Allah, may Allah bless him and grant him peace, had two mu'adhdhans: Bilal and Ibn Umm Maktum. The Messenger of Allah, may Allah bless him and grant him peace, said, "Bilal calls the adhan while it is still night, so eat and drink until Ibn Umm Maktum calls the adhan." He said, "The time between the two adhans was only long enough for the one to go up and the other to come down." [Agreed upon]

1232. 'Amr ibn al-'As reported that the Messenger of Allah, may Allah bless him and grant him peace, said, "The difference between our fasting and the fasting of the people of the Book lies in the eating of suhur." [Muslim]