question #3 Sahih Muslim 1156a, Book 13, Hadith 223 : How did the Prophet Muhammad (ﷺ) approach fasting during the months other than Ramadan?

I said to’A’isha (Allah be pleased with her): Did the Messenger of Allah (ﷺ) fast for a full month besides Ramadan? She said: I do not know of any month in which he fasted throughout, but that of the month of Ramadan and (the month) in which he did not fast at all, till he ran the course of his life.