Jami at-Tirmidhi 1618
Jami at-Tirmidhi · Book 21: The Book on Military Expeditions · What Has Been Related About The Exhortation Of The Prophet (saws) Regarding Fighting
Another chain with similar narrations. [Abu 'Eisa said:
قَالَ الْحَسَنُ وَحَدَّثَنَا أَبُو الْوَلِيدِ ، حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ ، بِهَذَا الإِسْنَادِ مِثْلَهُ . قَالَ أَبُو عِيسَى وَهَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ .
] This Hadith is Hasan Sahih.