The extent to which stoning the pillars is sufficient if the pebble does not fall into the pool

Question:
Is stoning the pillars valid if the pebble falls beside the pillar at a distance of about a meter, for example, if it hits the adjacent concrete pillar because it was not seen, or because it could not be distinguished, or because of the heavy crowd?

Answer:
It is sufficient unless it falls into the pool. If it falls outside the pool, it is not sufficient. However, if it falls into the pool and rolls out, that is acceptable. If it falls into the pool, that is enough, even if it exits afterward. The important thing is that it falls into the pool. So, if it rolls out of the pool afterward, that is acceptable. But if it falls outside the pool, it is not sufficient. Yes. May Allah reward you with good.