Surah As-Saff 61:4
إِنَّ ٱللَّهَ يُحِبُّ ٱلَّذِينَ يُقَٰتِلُونَ فِى سَبِيلِهِۦ صَفًّا كَأَنَّهُم بُنْيَٰنٌ مَّرْصُوصٌ ٤
EnglishSahih International
Indeed, Allah loves those who fight in His cause in a row as though they are a [single] structure joined firmly.