Sunan An-Nasa'i

Abdullah bin 'Amr bin Al-As said:""The Prophet heard that I was fasting continually,"" and he quoted this Hadith. 'Ata said: ""I am not sure how he put it, but I think he said: 'There is no fast for one who fats continually."" '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