As Saff Ayah 4
إِنَّ ٱللَّهَ يُحِبُّ ٱلَّذِينَ يُقَـٰتِلُونَ فِى سَبِيلِهِۦ صَفًّا كَأَنَّهُم بُنْيَـٰنٌ مَّرْصُوصٌ ٤
Surely Allah loves those who fight in His cause in ?solid? ranks as if they were one concrete structure.
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