Abdullah b. Buraida (Allah be pleased with him) reported on the authority of his father: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

Abdullah b. Buraida (Allah be pleased with him) reported on the authority of his father: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

Ibn Buraida (Allah be pleased with him) reported on the authority of his father: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

This hadith has been narrated on the authority of Sufyan with the same chain of transmitters in which it is said:" Fasting of two months

Buraida (Allah be pleased with him) reported a similar hadith on the authority of his father that a woman came to the Messenger of Allah (ﷺ) and he said:" Fasting for one month