I was sitting with the Messenger of Allah (ﷺ) ; the rest of the hadith is the same but with this variation that the (the narrator) said:" Fasts of two months."
Sahih Muslim Book 13, Hadith 204
← Previous Hadith When we were sitting with the Messenger of Allah (ﷺ), a woman came to him and said: I had gifted to my mother a maid-servant, and now she (the mother) has died. Thereupon he (the Holy Prophet) said: There is a definite reward for you and she (the maid-servant) has been returned to you as an inheritance. She (that woman) again said: Fasts of a month (of Ramadan) are due upon her; should I observe them on her behalf? He (the Holy Prophet) said: Observe fasts on her behalf. She (again) said: She did not perform Hajj, should I perform it on her behalf? He (the Holy Prophet) said: Perform Hajj on her behalf.

Sahih Muslim Book 13, Hadith 203 Next Hadith → A woman came to the Messenger of Allah (ﷺ), and the rest of the hadith is the same, but he said:" Fasting of one month."

Sahih Muslim Book 13, Hadith 205