Stoning on behalf of another before stoning for oneself

Question:
This questioner says: An elderly man appointed me to stone the Jamarat al-Aqabah on his behalf, and I did stone for him, but I mentioned his name before my own, meaning I stoned for him before stoning for myself, and that is how it was. However, he has also appointed me to stone for him on the remaining days, and he is currently in Makkah. I ask you to inform me what is obligatory for me in this matter? May Allah reward you with good.

Answer:
If it is your obligatory Hajj, you must repeat the stoning for your brother, for whom you stoned in place of yourself. But if you were performing a voluntary Hajj, it does not matter if you prioritized him over yourself; it causes no harm. However, if this is your obligatory Hajj, you must repeat the stoning that you performed before your own, and you must do it for your brother, because one does not prioritize anyone over one’s obligatory duty. You repeat it by stoning for him, and then you do so for the remaining pillars: you start with yourself, then for the one who appointed you. This is what should be done. Yes.

The presenter:
May Allah reward you with good, Your Eminence the Shaykh!