שמואל א, פרק ל׳, פסוק י׳

The rapid pursuit of the Amalekite forces reaches a critical physical breaking point, forcing a divide within the military ranks. Driven by deep exhaustion, a portion of the fighters must halt their advance while the remaining men press on. The primary approach among commentators is that these stationary men experience a state of extreme weakness and fatigue. This physical toll prevents them from continuing the chase and crossing the stream, which poses a difficult obstacle for them to navigate in their current state.

The severity of their condition is understood as a complete physical breaking, where their bodies are entirely shattered by the intense effort [רש״י, רד״ק]. This profound exhaustion renders them idle, stripping them of the ability to sustain their normal level of activity and pushing forward [מצודת ציון, רד״ק].

Despite this extreme weakness, their halt is not an act of desertion or a retreat to their homes. The two hundred men who stay behind remain stationed at the Besor stream under David's direct orders. Their new mission is to guard the army's heavy equipment and supplies. By leaving this baggage behind, the four hundred fighters who continue the pursuit are able to lighten their physical load, allowing them to significantly speed up the chase [מלבי״ם].