Is it permissible to offer the 'Id sacrifice on behalf of a deceased person?
Machine translationRead the Arabic original
Question : May Allah have mercy on him.
Answer : On behalf of himself and his family, not on behalf of the deceased. The deceased have their bequests if they bequeathed the sacrifice. As for if they did not bequeath it, the sacrifice is for you and your family. And if you intend it for both the deceased and the living, there is no harm. However, the default is that the sacrifice is prescribed for the living, not for the deceased, except for what they bequeathed.
Answer : On behalf of himself and his family, not on behalf of the deceased. The deceased have their bequests if they bequeathed the sacrifice. As for if they did not bequeath it, the sacrifice is for you and your family. And if you intend it for both the deceased and the living, there is no harm. However, the default is that the sacrifice is prescribed for the living, not for the deceased, except for what they bequeathed.
Source
قناة «فضيلة الشيخ محمد بن صالح العثيمين»، 56 - 86 هل تجوز الأضحية عن المتوفى؟ نظرات من سورتي الماعون والكوثر - ابن عثيمين — youtube.com
The Arabic text is a machine transcription of the audio recording.