Muwatta Imam Malik (Riwayat Ibn al-Qasim)

And with the same chain of narration (it is narrated from Sayyiduna Ibn Umar, may Allah be pleased with them both) that the Messenger of Allah, peace and blessings be upon him, forbade fasting continuously without breaking the fast. So the people asked: O Messenger of Allah! You yourself fast continuously? The Prophet, peace and blessings be upon him, replied: "I am not like you; during continuous fasting, I am given food and drink."