أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا عَبْدُ الرَّزَّاقِ، قَالَ أَنْبَأَنَا مَعْمَرٌ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم وَذَلِكَ عِنْدَ السُّحُورِ ‏"‏ يَا أَنَسُ إِنِّي أُرِيدُ الصِّيَامَ أَطْعِمْنِي شَيْئًا ‏"‏ ‏.‏ فَأَتَيْتُهُ بِتَمْرٍ وَإِنَاءٍ فِيهِ مَاءٌ وَذَلِكَ بَعْدَ مَا أَذَّنَ بِلاَلٌ فَقَالَ ‏"‏ يَا أَنَسُ انْظُرْ رَجُلاً يَأْكُلُ مَعِي ‏"‏ ‏.‏ فَدَعَوْتُ زَيْدَ بْنَ ثَابِتٍ فَجَاءَ فَقَالَ إِنِّي قَدْ شَرِبْتُ شَرْبَةَ سَوِيقٍ وَأَنَا أُرِيدُ الصِّيَامَ ‏.‏ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ وَأَنَا أُرِيدُ الصِّيَامَ ‏"‏ ‏.‏ فَتَسَحَّرَ مَعَهُ ثُمَّ قَامَ فَصَلَّى رَكْعَتَيْنِ ثُمَّ خَرَجَ إِلَى الصَّلاَةِ ‏.‏

It was narrated that Anas said: "The Messenger of Allah said, at the time of Sahur. 'O Anas, I want to fast, so give me something to eat.' So I brought him some dates and a vessel of water. That was after the Adhan of Bilal. He said: 'O Anas, find a man to come and eat with me.' So I called Zaid bin Thabit, who came and said: "I drank some Sawiq and I want to fast.' The Messenger of Allah said: "I also want to fast.' So he ate Sahr with him, then he got up and prayed two Rak'ahs, then he went out to the prayer." Translation Not Available

Book Ref: Sunan An Nisai Book 22 Hadith 2167
Web Ref:  Sunan An Nisai Vol 3 Book 22 Hadith 2169