Stoning the pillars on behalf of himself and his family without their authorization: Is a fidyah obligatory on them if they rely on that?

Question:
May Allah reward you. The sender is from the southern region of the Kingdom. He says: I performed Hajj with my family, and there were nine of us. On the last day, my son went to stone the pillars and informed me that he had stoned on behalf of all of us. I relied on the fact that this sufficed because I was unaware of the ruling. Then he says: I performed Hajj alone twice, and I stone on the last day before noon, as I consider the tenth day to be one of the days of Mina about which Allah the Exalted said: the verse. I ask the honorable Mufti, after reviewing the answer,

Answer:
The first part of the question is that his son stoned on his behalf and on behalf of those with him without their permission and without their authorization; this does not suffice. This does not suffice because they did not authorize him to do so. Therefore, they must offer a fidyah (ransom payment) for what happened: each one must slaughter an animal in Makkah and distribute it to the poor of the Haram; because they neglected an obligatory duty of Hajj, it must be compensated with blood. Whoever is unable to slaughter due to poverty and hardship must fast for ten days. Yes.