Sayyiduna Ibn Umar (may Allah be pleased with them both) said that the Messenger of Allah (peace and blessings be upon him) forbade continuous fasting (without breaking the fast) for three days. The Companions said: "But you fast continuously?" He ((peace and blessings be upon him)) said: "I remain in a state in which my Lord feeds me and gives me drink."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 13243