At Tawbah Ayah 39

إِلَّا تَنفِرُواْ يُعَذِّبْكُمْ عَذَابًا أَلِيمًا وَيَسْتَبْدِلْ قَوْمًا غَيْرَكُمْ وَلَا تَضُرُّوهُ شَيْــًٔا‌ۗ وَٱللَّهُ عَلَىٰ كُلِّ شَىْءٍ قَدِيرٌ ٣٩ If you do not march forth, He will afflict you with a painful torment and replace you with other people. You are not harming Him in the least. And Allah is Most Capable of everything.