Is designating the 'Id sacrifice at the time of slaughter obligatory?
Machine translationRead the Arabic original
Question:
Honorable Shaykh, may Allah grant you success. A questioner says: Is it obligatory to designate the 'Id sacrifice for oneself and one's family at the time of slaughtering the 'Id sacrifice?
Answer:
It is not obligatory, but if he designates it, it becomes designated, and he may not replace it with anything other than something better. Replacing it with something better is permissible, but replacing it with something lesser after he has designated it is not permissible.
Honorable Shaykh, may Allah grant you success. A questioner says: Is it obligatory to designate the 'Id sacrifice for oneself and one's family at the time of slaughtering the 'Id sacrifice?
Answer:
It is not obligatory, but if he designates it, it becomes designated, and he may not replace it with anything other than something better. Replacing it with something better is permissible, but replacing it with something lesser after he has designated it is not permissible.
Source
شرح كتاب المنتقى من أخبار المصطفى صلى الله عليه وسلم، بداية من باب الحث على الأضحية — islamhouse.com (49:14)
The Arabic text is a machine transcription of the audio recording.