Surah Aali Imran (The Family of Imran), Verse 173

اَلَّذِیْنَ قَالَ لَهُمُ النَّاسُ اِنَّ النَّاسَ قَدْ جَمَعُوْا لَكُمْ فَاخْشَوْهُمْ فَزَادَهُمْ اِیْمَانًا وَّقَالُوْا حَسْبُنَا اللّٰهُ وَنِعْمَ الْوَكِیْلُ ۟

Allazeena qaala lahumun naasu innan naasa qad jama'oo lakum fakhshawhum fazaadahum emaananw wa qaaloo hasbunal laahu wa ni'malwakeel

“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."”

Quran 3:173 (Yusuf Ali Translation)