Is a goat sufficient for the 'aqiqah if it is eight months old?

The questioner:
May Allah reward you, Your Eminence, father. The questioner says: A man performed the 'aqiqah for his son with a goat that is eight months old, and he asks if it is sufficient for his son?

The Shaykh:
It is not sufficient for his son.

The questioner:
With a goat that is eight months old, and the question is whether it is sufficient for his son?

The Shaykh:
No, it is not sufficient, because it is required that it be one year old. The sheep is the one for which six months, half a year, is sufficient. As for the goat, it is necessary that a full year has passed. Yes.

The questioner:
We ask Allah for your deeds, and he says in the continuation of his question: Is there a difference between his ignorance and his intention in slaughtering it at this age?

The Shaykh:
No, he is not excused by his ignorance; rather, it is necessary to meet the specific age that the Messenger (peace and blessings be upon him) specified for the 'udhiyah, and the 'aqiqah has the same ruling as the 'udhiyah, so nothing is sufficient in it except what is sufficient in the 'udhiyah. Yes.