'Allah is Sufficient for us and He Is the Best Disposer of affairs," was said by Abraham when he was thrown into the fire; and it was said by Muhammad when they (i.e. hypocrites) said, "A great army is gathering against you, therefore, fear them," but it only increased their faith and they said: "Allah is Sufficient for us, and He is the Best Disposer (of affairs, for us)." (3.173)
{حَسْبُنَا اللَّهُ وَنِعْمَ الْوَكِيلُ} قَالَهَا إِبْرَاهِيمُ عَلَيْهِ السَّلاَمُ حِينَ أُلْقِيَ فِي النَّارِ وَقَالَهَا مُحَمَّدٌ ﷺ حِينَ قَالُوا {إِنَّ النَّاسَ قَدْ جَمَعُوا لَكُمْ فَاخْشَوْهُمْ فَزَادَهُمْ إِيمَانًا وَقَالُوا حَسْبُنَا اللَّهُ وَنِعْمَ الْوَكِيلُ}