Surah As-Saff, ayah 4

إِنَّ ٱللَّهَ يُحِبُّ ٱلَّذِينَ يُقَٰتِلُونَ فِي سَبِيلِهِۦ صَفّٗا كَأَنَّهُم بُنۡيَٰنٞ مَّرۡصُوصٞ ٤

Innallāha yuhibbul-ladhīna yuqātilūna fī sabīlihī saffan ka annahum bunyānum marsūs

Indeed, Allāh loves those who fight in His cause in a row as though they are a [single] structure joined firmly.