Quran 8:64 — The Spoils of War (Al-Anfal)

O you prophet, sufficient for you is GOD and the believers who have followed you.

[8:63] He has reconciled the hearts (of the believers). Had you spent all the money on earth, you could not reconcile their hearts. But GOD did reconcile them. He is Almighty, Most Wise.

[8:65] O you prophet, you shall exhort the believers to fight. If there are twenty of you who are steadfast, they can defeat two hundred, and a hundred of you can defeat a thousand of those who disbelieved. That is because they are people who do not understand.