Aal-'Imran - 3:173

الَّذِينَ قَالَ لَهُمُ النَّاسُ إِنَّ النَّاسَ قَدْ جَمَعُواْ لَكُمْ فَاخْشَوْهُمْ فَزَادَهُمْ إِيمَاناً وَقَالُواْ حَسْبُنَا اللّهُ وَنِعْمَ الْوَكِيلُ
[3:173]
Those to whom the people said: Surely men have gathered against you, therefore fear them, but this increased their faith, and they said: Allah is sufficient for us and most excellent is the Protector.
Men said to them: "A great army is gathering against you": And frightened them: But it (only) increased their Faith: They said: "For us Allah sufficeth, and He is the best disposer of affairs."
Those unto whom men said: Lo! the people have gathered against you, therefor fear them. (The threat of danger) but increased the faith of them and they cried: Allah is Sufficient for us! Most Excellent is He in Whom we trust!