Narrated Salama bin Al-Akwa:

The Prophet ﷺ passed by some persons of the tribe of Aslam practicing archery (i.e. the throwing of arrows) Allah's Apostle ﷺ said, "O offspring of Ishmael! Practice archery (i.e. arrow throwing) as your father was a great archer (i.e. arrow-thrower). I am with (on the side of) the son of so-and-so-." Hearing that, one of the two teams stopped throwing. Allah's Apostle asked them, ' Why are you not throwing?" They replied, "O Allah's Apostle! How shall we throw when you are with the opposite team?" He said, "Throw, for I am with you all."

حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا حَاتِمٌ، عَنْ يَزِيدَ بْنِ أَبِي عُبَيْدٍ، عَنْ سَلَمَةَ بْنِ الأَكْوَعِ ـ رضى الله عنه ـ قَالَ مَرَّ النَّبِيُّ ﷺ عَلَى نَفَرٍ مِنْ أَسْلَمَ يَنْتَضِلُونَ، فَقَالَ رَسُولُ اللَّهِ ﷺ " ارْمُوا بَنِي إِسْمَاعِيلَ، فَإِنَّ أَبَاكُمْ كَانَ رَامِيًا، وَأَنَا مَعَ بَنِي فُلاَنٍ ". قَالَ فَأَمْسَكَ أَحَدُ الْفَرِيقَيْنِ بِأَيْدِيهِمْ، فَقَالَ رَسُولُ اللَّهِ ﷺ " مَا لَكُمْ لاَ تَرْمُونَ ". فَقَالُوا يَا رَسُولَ اللَّهِ، نَرْمِي وَأَنْتَ مَعَهُمْ قَالَ " ارْمُوا وَأَنَا مَعَكُمْ كُلِّكُمْ ".