"I asked 'Aishah about the fasting of the Messenger of Allah. She said: "The Messenger of Allah used to fast until we said: He is going to (continue to) fast, and he used not to fast until we said: He is not going to, and he did not fast for a whole month from the time he came to Al-Madinah, apart from Ramadan."'
Sunan an-Nasa'i Book 22, Hadith 260
← Previous Hadith "I do not know that the Messenger of Allah recited the whole Quran in one night, or prayed Qiyam until morning, or ever fasted an entire month, except Ramadan."

Sunan an-Nasa'i Book 22, Hadith 259 Next Hadith → "The month which the Messenger of Allah most liked to fast was Shaban; indeed he used to join it to Ramadan."

Sunan an-Nasa'i Book 22, Hadith 261