How to make up the fast for one who died with fasting owed

Question:
A man passed away with fasting owed from Ramadan, and he has sons and daughters. Is it obligatory for them to make up the fast for their father? Is the making up of the fast required of all of them, or only the men? Do they all fast on the same day, or does each person fast one day on his behalf?

Answer:
The Prophet (peace and blessings be upon him) said: If one person or a group fasts on his behalf, they have done well, may Allah reward them with good. If one person fasts all the days on his behalf, or a group fasts—this one fasts three days, that one fasts four days, and this one fasts two days—they have done well, may Allah reward them with good; because he (peace and blessings be upon him) said: .
So the Sunnah for his relatives is to fast on his behalf. If it is making up Ramadan, they fast on his behalf. If it is an expiation that must be consecutive, they fast it consecutively, like two consecutive months; one person from among them fasts it consecutively, and that is recommended for him. If it is one day, some of his relatives fast it on his behalf, whether from Ramadan or a vow.
The point is: the Sunnah for his relatives is to fast on his behalf whatever fasting was obligatory upon him if he died without fasting, whether it was from Ramadan or from expiations. But if the expiation is consecutive, like the expiation for killing or the expiation for zihar, they fast it consecutively; one person fasts it, because consecutiveness is from one person, day after day, consecutively. Yes.

The presenter: May Allah reward you, O Shaykh.