Quran 33:12 — The Parties (Al-Ahzab)

وَإِذ يَقولُ المُنٰفِقونَ وَالَّذينَ فى قُلوبِهِم مَرَضٌ ما وَعَدَنَا اللَّهُ وَرَسولُهُ إِلّا غُرورًا

The hypocrites and those with doubts in their hearts said, "What GOD and His messenger promised us was no more than an illusion!"

[33:11] That is when the believers were truly tested; they were severely shaken up.

[33:13] A group of them said, "O people of Yathrib, you cannot attain victory; go back." Others made up excuses to the prophet: "Our homes are vulnerable," when they were not vulnerable. They just wanted to flee.