If one begins the dhikr before the pillar or completes it after it, is it sufficient?

Question : The jurists (may Allah have mercy on them) say that if one begins it before the pillar or completes it after it, it is not sufficient. Why? Khalid, why?

Answer : Yes, because he performed the dhikr in a place other than its designated place. The designated place is between the two pillars. If he begins before it, he has performed it in a place other than its designated place, and if he completes it after it, he has performed it in a place other than its designated place.