A man wanted to slaughter a sacrifice for a newborn, so he went to the meat shops and bought ready-made meat. Is that valid?

Question:
Honorable Shaykh, may Allah grant you success. He says: If a man wants to slaughter a sacrifice for one of his children, he goes to the specialized meat shops, which slaughter sheep daily, skin them, and display them for sale whole. He chooses one of them with the intention of the sacrifice, even though it has already been slaughtered. Is that valid?

Answer:
It is not valid. This does not suffice as a sacrifice. Buying meat does not suffice as a sacrifice, because the slaughter is the intended act, and it is drawing near to Allah the Exalted. The meat is not the intended act; the slaughter is the intended act. The slaughter is an act of worship for Allah the Exalted.