It wasnarrated from 'Abdullah bin Shikhkhir that his father said:
"TheProphet (ﷺ) said: 'Whoever fasts continually, he neither fastsnor breaks his fast.'" (FR)
English reference (FR): Vol. 1, Book 7, Hadith 1705 (FR)
Arabic reference (FR): Book 7, Hadith 1775 (FR)