Riyad as-Salihin: The Book of Miscellany – Hadith No. 1293 — Ibn ‘Abbas (May Allah be pleased with them) said: When (Prophet) Ibrahim… (Hadith No. 1293)

Ibn 'Abbas (May Allah be pleased with them) said: When (Prophet) Ibrahim (Abraham) was thrown into the fire, he said: "Allah (Alone) is sufficient for us, and, He is the Best Disposer of affairs." So did Messenger of Allah Muhammad (ﷺ) when he was told: "A great army of the pagans had gathered against him, so fear them". But this (warning) only increased him and the Muslims in Faith and they said: "Allah (Alone) is sufficient for us, and He is the Best Disposer of affairs (for us)"..

Explanation:

Reference: Riyad as-Salihin, The Book of Miscellany, Hadith No. 1293