What is the ruling on sitting for three days for condolences and slaughtering animals for the condolence gathering?

Question:
Muhammad from Ta'if, please, my brother Muhammad. Yes, yes, Shaykh, please. Peace be upon you and Allah's mercy. And upon you peace and mercy. Shaykh, may Allah reward you with good. Shaykh Salih, may Allah grant you success in what He loves and is pleased with. What is the ruling on the three days of condolences, slaughtering animals, laying down mats, and the gathering of the tribe? And the one who does not attend, may Allah prolong your life, gets upset about it. The father of the deceased, or his brother, or... we did not know this matter, so we want a fatwa from you, Shaykh, and clarification of this. May Allah reward you with good, because your fatwa is accepted, if Allah wills, among the Muslims. Thank you.

Answer:
My brother, these procedures in the condolence gathering—limiting it to three days, abstaining from work, sitting in the house, people coming to him, and slaughtering animals—all of this has no basis. This is from bid'ah (religious innovations) and newly invented matters, and from the practices that burden Muslims. Condolences are prescribed, but not in this manner. Condolences are through words and supplication. If you meet the bereaved, or call him on the mobile phone or the telephone, you say: "May Allah improve your consolation, may Allah console you for your loss, and may Allah forgive your deceased." There is no need for holding mourning gatherings, laying down mats, and setting aside days. And if he gets upset, for example, and the father of the deceased knows, it is said to him: "Look, this is not prescribed, nor is it in your interest, nor in the interest of the deceased." This is clarified to him. Yes.