The ruling on appointing someone else to stone the pillars on behalf of one who is able to do so

Question:
May Allah reward you. The sister questioner sent this question, saying: A woman left Muzdalifah at the end of the night and appointed her son to stone the pillars on her behalf, even though she was able to do so. What is the ruling on this?

Answer:
The ruling is that it is not permissible to appoint someone to stone the pillars on one's behalf except for one who is unable, or for whom it is difficult, such as an elderly person, a pregnant woman, or small children. In these cases, the adults stone on their behalf because it is difficult for them to stone or they cannot bear it. As for appointing someone without an excuse, this is not permissible and does not suffice. One must stone it himself because it is a ritual act incumbent upon him, so he must perform it with his own person. He only appoints someone if he is unable to perform it himself or if it is difficult for him. Yes.