سُنَنُ النَّسَائِيِّ
Sunan an-Nasa’i 2146
The Book of Fasting
Encouraging The Sahur
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ قَتَادَةَ، وَعَبْدِ الْعَزِيزِ، عَنْ أَنَسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم تَسَحَّرُوا فَإِنَّ فِي السَّحُورِ بَرَكَةً .
It was narrated that Anas said: "The Messenger of Allah said: 'Take Sahur, for in Sahur there is blessing." 'Ata said: "someone who heard him told me that Ibn 'Umar (said) that the Prophet (ﷺ) said: 'Whoever fasts every day of his life, then he has not fasted."
Sunan an-Nasa'i, 2146Sahih (Darussalam)