An-Nisa' - 4:71

يَا أَيُّهَا الَّذِينَ آمَنُواْ خُذُواْ حِذْرَكُمْ فَانفِرُواْ ثُبَاتٍ أَوِ انفِرُواْ جَمِيعًا
[4:71]
O you who believe! take your precaution, then go forth in detachments or go forth in a body.
O ye who believe! Take your precautions, and either go forth in parties or go forth all together.
O ye who believe! Take your precautions, then advance the proven ones, or advance all together.