Quran 61:4 from Surah As-Saff on Divine Marvels.
إِنَّ ٱللَّهَ يُحِبُّ ٱلَّذِينَ يُقَٰتِلُونَ فِي سَبِيلِهِۦ صَفّٗا كَأَنَّهُم بُنۡيَٰنٞ مَّرۡصُوصٞ
English translation: Indeed Allah loves those who fight in His Way (in) a row as if they (were) a structure joined firmly
Transliteration: inna al-laha yuhibbu alladhina yuqatiluna fi sabilihi saffan ka-annahum bun'yanun marsusun