Mishkat al-Masabih 19 Jihad كتاب الجهاد 77

وَعَن أنسٍ قَالَ: كَانَ أَبُو طَلْحَةَ يَتَتَرَّسُ مَعَ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بِتُرْسٍ وَاحِدٍ وَكَانَ أَبُو طَلْحَةَ حَسَنَ الرَّمْيِ فَكَانَ إِذَا رَمَى تَشَرَّفَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَيَنْظُرُ إِلَى مَوضِع نبله. رَوَاهُ البُخَارِيّ

Anas told that Abu Talha and the Prophet were both using one shield. Abu Talha was a good archer, and when he shot the Prophet looked over and watched where his arrows went. Bukhari transmitted it.