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 said: 'Whoever fasts every day of his life, then he has not fasted." Translation Not Available

Book Ref: Sunan An Nisai Book 22 Hadith 2146
Web Ref:  Sunan An Nisai Vol 3 Book 22 Hadith 2148