What is the ruling on slaughtering a sheep from the back of the neck with a single blow? And is it permissible to eat it?

If a person strikes a sheep with a sword, intending only to slaughter it, and severs the trachea and esophagus, or completely severs the head, the animal is permissible to eat. However, if one slaughters it from the back of its neck intentionally, it is not permissible to eat. If one slaughters it from the back of its neck by mistake or oversight, such as if their hand twisted, and provided that it had a stable life before the trachea and esophagus were severed, the animal is permissible to eat.