His Statement: Those (i.e., believers) unto whom the people (hypocrites) said, Verily the people (Mushrikūn) have gathered against you (a great army), therefore, fear them... (V .3:173)

'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)

The last statement of Abraham when he was thrown into the fire was:--"Allah is Sufficient for us and He is the Best Disposer (of affairs for us)." (3.173)