[Machine] Abu Darda used to say: "Perform a righteous deed before the battle, for you will only fight people with your deeds."
أَنَّ أَبَا الدَّرْدَاءِ كَانَ يَقُولُ اعْمَلْ عَمَلًا صَالِحًا قَبْلَ الْغَزْوِ فَإِنَّمَا تُقَاتِلُونَ النَّاسَ بِأَعْمَالِكُمْ