وَلَا يَقِفُ عِنْدَهَا.
Translation: And he does not stop beside it [for the post-stoning supplication].
This instruction concerns not remaining for the prescribed post-stoning supplication at Jamrat al-Aqabah. The pilgrim moves on after completing this rite. It does not ban safety-related pauses or following crowd-control instructions.
On later days the practice after the first and middle Jamarahs differs. Always identify which Jamarah and which day before applying a general rule about stopping to supplicate.