‘Uqba b. ‘Amir told that he heard God's Messenger say when he was on the pulpit, “Prepare for them as much strength as you can. Strength is shooting; strength is shooting; strength is shooting.” Muslim transmitted it.

عَن عُقْبَةَ بْنِ عَامِرٍ قَالَ: سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَهُوَ عَلَى الْمِنْبَرِ يَقُول: " (وَأَعدُّوا لَهُ مَا استطَعْتُمْ منْ قُوَّةٍ) أَلَا إِنَّ الْقُوَّةَ الرَّمْيُ أَلَا إِنَّ الْقُوَّةَ الرَّمْيُ أَلَا إِنَّ الْقُوَّةَ الرَّمْيُ) رَوَاهُ مُسْلِمٌ