Days of fasting that are prescribed for fasting on behalf of another

Question:
We return at the beginning of this episode to a message sent to the program from one of our sisters in the Al-Jawf region. Your sister in Allah, Umm Ahmad, Umm Ahmad, we discussed some issues with her in a previous episode, and in this meeting she asks your eminence, first, Shaykh Salih, and she says: Last year, I intended to fast the Day of 'Arafah for my brother who had passed away, meaning that I fasted it so that my brother (may Allah have mercy on him) would receive the reward and merit. Is this action permissible or not? And if it is not permissible, who receives the reward of the fast? May Allah reward you with good.

Answer:
In the name of Allah, the Most Gracious, the Most Merciful. Praise be to Allah, Lord of the worlds, and may Allah send prayers and blessings upon our Prophet Muhammad and his family and his Companions. As for what follows, fasting on behalf of another is not prescribed except for obligatory fasting by vow, or fasting from the month of Ramadan if a person had fasting to make up and died without making it up, despite being able to make it up, but he neglected it and died before making it up. Some scholars also hold that it is fasted on his behalf, just as it is fasted on his behalf in the case of a vow. The Prophet (peace and blessings be upon him) said: Yes.