What is the ruling if it turns out that the farewell circumambulation was performed before the agent’s stoning?

The Shaykh : He asks: What is the ruling regarding the farewell circumambulation for one who appointed an agent to stone the pillars on his behalf for a valid excuse, and they agreed that the agent would stone at the beginning of the time, then he estimated the duration of the stoning and performed the circumambulation based on the strong likelihood that the agent had already stoned? And what is the ruling if it turns out that his circumambulation was before the agent’s stoning?
If it turns out that his circumambulation was before the agent’s stoning, it is not considered, meaning it is invalid. However, if it did not turn out that way and he acted based on the strong likelihood, that is sufficient.