Ali bin Bilal narrates this from some of the Ansar; they said: We used to offer the Maghrib prayer behind the Prophet (peace and blessings be upon him), then we would go back, moving along quickly until we reached our quarters, and the place where his arrow landed would not be hidden from any one of us (that is, there was enough light for the eye to see that far).
Ahmad recorded it, and its chain is hasan (good).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الصلاة / 1729