Sahih al-Bukhari 4564
صحيح البخاري#4564SahihNarrated Ibn `Abbas: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)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 65:86