Mishkat al-Masabih 4 Prayer كتاب الصلاة 31

وَعَنْ رَافِعِ بْنِ خَدِيجٍ قَالَ: كُنَّا نُصَلِّي الْمَغْرِبَ مَعَ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَيَنْصَرِف أَحَدنَا وَإنَّهُ ليبصر مواقع نبله ”

Rafi‘ b. Khadij said, “We used to observe the sunset prayer with God’s Messenger, then one of us would go away when it was still possible to see the distance of a bowshot.” (Bukhari and Muslim)