Sahih al-Bukhari 4811
صحيح البخاري#4811SahihNarrated `Abdullah:A (Jewish) Rabbi came to Allah's Messenger (ﷺ) and he said, "O Muhammad! We learn that Allah will put all the heavens on one finger, and the earths on one finger, and the trees on one finger, and the water and the dust on one finger, and all the other created beings on one finger. Then He will say, 'I am the King.' Thereupon the Prophet (ﷺ) smiled so that his pre-molar teeth became visible, and that was the confirmation of the Rabbi. Then Allah's Messenger (ﷺ) recited: 'They made not a just estimate of Allah such as is due to Him. And on the Day of Resurrection the whole of the earth will be grasped by His Hand and the heavens will be rolled up in His Right Hand. Glorified is He, and High is He above all that they associate as partners with Him
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: 65:333