حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، أَنَّ بَكْرَ بْنَ مُضَرَ، حَدَّثَهُمْ عَنِ ابْنِ الْهَادِ، عَنْ عَبْدِ اللَّهِ بْنِ خَبَّابٍ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، أَنَّهُ سَمِعَ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ ‏"‏ لاَ تُوَاصِلُوا فَأَيُّكُمْ أَرَادَ أَنْ يُوَاصِلَ فَلْيُوَاصِلْ حَتَّى السَّحَرِ ‏"‏ ‏.‏ قَالُوا فَإِنَّكَ تُوَاصِلُ ‏.‏ قَالَ ‏"‏ إِنِّي لَسْتُ كَهَيْئَتِكُمْ إِنَّ لِي مُطْعِمًا يُطْعِمُنِي وَسَاقِيًا يَسْقِينِي ‏"‏ ‏.‏

Narrated Abu Sa'id al-Khudri: The Messenger of Allah (PBUH) as saying: Do not observe perpetual fasting. If any of you wants to observe perpetual fast, he should observe it until the dawn. They (the people) asked: You observe perpetual fast ? He replied: My position is not like that of yours. There is One Who gives me to eat, and there is One who gives me to drink. Translation Not Available

Book Ref: Sunan Abi Dawud Book 14 Hadith 2361
Web Ref:  Sunan Abi Dawud Book 13 Hadith 2354