Is the negligence of the child's grandfather in unsafely stopping the harrowing machine, which led to the child's death, considered a sin of killing? And is the 'aqiqah for the deceased child incumbent upon the family members if his father was traveling and did not perform the 'aqiqah for him?

Stopping a car on a slope and securing it with a stone is a mistake that necessitates blood money (Diyyah) and expiation (Kaffarah (definition)) for its owner if it causes a death, because he is considered negligent for not adequately securing the car. Despite this, he incurs no sin due to lack of intent, as Allah has forgiven mistakes. As for the Aqiqah (definition), it is recommended for a child who died before an Aqiqah was performed for him. It can be slaughtered on the seventh day even if the child died before it, and the guardian is responsible for it. He may delegate someone or slaughter it himself anywhere.