SHAFAQNA – The Grand Ayatollah Khamenei answered questions about the payment of fasting Kaffarah on behalf of the deceased.
Question: If a person dies, who must pay for his fasting Kaffarah? Is it Wajib for the sons and daughters of the deceased to pay or someone else can also pay?
The Grand Ayatollah Khamenei: The fasting Kaffarah which is Wajib for the father, if he was able to fast and pay for feeding (poor); in this case, it can be taken from his assets, otherwise according to precaution, it is Wajib for the eldest son to fast.
Source: PERSIAN SHAFAQNA