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Takhrij Hadith 1251: "The Messenger of Allah ﷺ…"
On the authority of 'Aisha, may Allah be pleased with her, she said:
“
The Messenger of Allah ﷺ would fast until we thought he would never break his fast, and he would refrain from fasting until we thought he would never fast. I never saw the Messenger of Allah ﷺ complete an entire month of fasting except Ramadan, and I never saw him fast more in any month than he did in Sha'ban.”