Jami` at-Tirmidhi 3238
جامع الترمذي#3238SahihNarrated 'Abdullah:"A Jew came to the Prophet (ﷺ) and said: 'O Muhammad! Allah will seize the heavens upon a finger, the mountains upon a finger, the earths upon a finger, and the rest of creation upon a finger. Then He says: 'I am the King.'" He said: 'So the Messenger of Allah (ﷺ) laughed until his molars were visible. He said: "They made not a just estimate of Allah such as is due to Him (39:)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 47:290