Aisha (may Allah be pleased with her) said: "The Messenger (p.b.u.h.) used to fast until we thought he would never break his fast, and not fast until we thought he would never fast. I never saw the Messenger of Allah fasting for an entire month except in Ramadan, and I never saw him fast more than he did in Sha'ban." (Bukhari and Muslim). According to a report narrated by Muslim, "He used to fast all of Sha'ban, he used to fast all but a little of Sha'ban."