The ruling on reciting the Qur'an for the deceased for three days, then slaughtering on the third day and inviting people to lunch?

Question:
May Allah reward you with good and do you well. They also ask about the recitation performed for three days for a deceased person, and on the third day after death, the family of the deceased slaughters and invites people to lunch?

Answer:
The Prophet (peace and blessings be upon him) guided us to what we do with our dead, through his words and his deeds (peace and blessings be upon him). So when a person dies, one hastens to prepare him, including washing him, shrouding him, praying over him, carrying him, and burying him in the prescribed manner, and supplicating for him, seeking forgiveness for him, giving charity on his behalf, and performing Hajj or 'Umrah for him. All these actions are supported by evidence, and they are done for the dead, and their reward reaches them if Allah the Exalted and Supreme accepts it. So the criterion is following the Sunnah. We do not do anything for which there is no evidence from the Book of Allah or from the Sunnah of His Messenger (peace and blessings be upon him). What benefits the dead, if Allah accepts it, is only what is established by the Sunnah and supported by evidence. As for what is not supported by evidence from the Book of Allah or from the Sunnah of His Messenger, it is a bid'ah (religious innovation). Nothing from it reaches the dead, and it also makes the living who do it sinful and misguides them from the path of Allah. There is no good in innovations, neither for the living nor for the dead. Innovations are nothing but misguidance; every innovation is misguidance. And holding this celebration after three days, or after forty days, or after a year, and preparing these foods and slaughtering these animals, all of this is from the innovations. If instead they gave these foods and these animals as charity to the poor, with the intention that the reward is for the deceased, that would benefit him by the permission of Allah. But if they establish innovations with them, then this does not benefit the deceased nor the living; rather, it harms the living and does not benefit the dead, because it is not prescribed. And as long as it is not prescribed, it is an innovation, and there is sin in the innovation. Instead of there being reward in doing it, there is great sin in it. So what we advise these people is to leave these innovative customs. If they want to benefit their dead, let them seek forgiveness for them, let them pay off what is due to them in debts and rights that are in their possession, and let them draw near to Allah the Glorious and Exalted with what Allah has prescribed, and dedicate its reward to them, such as charity, Hajj, 'Umrah, and the 'Id sacrifice. All of these, if done with the intention that the reward is for the deceased and Allah the Exalted accepts it, benefit the dead. But as for these gatherings, these celebrations, and these occasions, there is no good in them and no benefit in them; rather, there is harm in them and sin, and people's customs are not to be followed, even if time has passed over them and the majority has practiced them, they are not to be followed as long as they contradict the guidance of the Book and the Sunnah. All good is in following the Book and the Sunnah, and all evil is in innovations, as the poet said: "The best of matters are those that have passed in guidance, and the worst of matters are the newly invented innovations." Yes.