Hadithcore
Jami` at-Tirmidhi, 2884
sahih· Darussalam

Narrated 'Abdullah bin Mas'ud:

"Allah has not created in the heavens nor in the earth what is more magnificent than Ayat Al-Kursi." Sufyan said: "Because Ayat Al-Kursi is the Speech of Allah, and Allah's Speech is greater than Allah's creation of the heavens and the earth."

حَدَّثَنَا مُحَمَّدُ بْنُ إِسْمَاعِيلَ، قَالَ حَدَّثَنَا الْحُمَيْدِيُّ، قَالَ حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، فِي تَفْسِيرِ حَدِيثِ عَبْدِ اللَّهِ بْنِ مَسْعُودٍ قَالَ مَا خَلَقَ اللَّهُ مِنْ سَمَاءٍ وَلاَ أَرْضٍ أَعْظَمَ مِنْ آيَةِ الْكُرْسِيِّ ‏.‏ قَالَ سُفْيَانُ لأَنَّ آيَةَ الْكُرْسِيِّ هُوَ كَلاَمُ اللَّهِ وَكَلاَمُ اللَّهِ أَعْظَمُ مِنْ خَلْقِ اللَّهِ مِنَ السَّمَاءِ وَالأَرْضِ ‏.‏

References2 variants
In-Book Reference
Book 45, Hadith 10
English Reference
Vol. 5, Book 42, Hadith 2884