Surat Al-'Aĥzāb - سورة الأحزاب

قَدْ يَعْلَمُ اللَّهُ الْمُعَوِّقِينَ مِنكُمْ وَالْقَائِلِينَ لِإِخْوَانِهِمْ هَلُمَّ إِلَيْنَا ۖ وَلَا يَأْتُونَ الْبَأْسَ إِلَّا قَلِيلًا

Muhsin Khan: Allah already knows those among you who keep back (men) from fighting in Allah's Cause, and those who say to their brethren "Come here towards us," while they (themselves) come not to the battle except a little.