The ruling on slaughtering for the deceased after seeing him in a dream

The questioner:
He says: Honorable Shaykh, may Allah grant you success. Some of the common people, when they see a deceased relative in a dream and visit him in his house, slaughter an animal for him as a mark of respect. We have been invited to a feast tomorrow, Wednesday. Should we accept this invitation? And is it permissible to eat from this slaughtered animal?

The Shaykh:
This is not permissible. It is a bid'ah (religious innovation). No slaughter is performed based on a dream. There are no rulings in dreams. Rulings are not established based on dreams, nor are acts of worship established based on them. This is not permissible. Alert them to this, that it is an error. Yes.

The questioner:
He says: Honorable Shaykh.

The Shaykh:
He wants to benefit the deceased by giving charity on his behalf. Even if he did not see him in a dream. If he wants to benefit him, he gives charity on his behalf. Even if he did not see him in a dream. Charity benefits the deceased. Yes. Or he makes du'a' (supplication) for him. If he is unable to give charity, he makes du'a' for him and seeks forgiveness for him. Yes.