The Book of Paradise, its Description, its Bounties and its Inhabitants
Ṣaḥīḥ Muslim 7159
فِي الْجَنَّةِ خَيْمَةٌ مِنْ لُؤْلُؤَةٍ مُجَوَّفَةٍ عَرْضُهَا سِتُّونَ مِيلاً فِي كُلِّ زَاوِيَةٍ مِنْهَا أَهْلٌ مَا يَرَوْنَ الآخَرِينَ يَطُوفُ عَلَيْهِمُ الْمُؤْمِنُ
fī al-jannah khaymatun min luʾluʾatin mujawwafatin ʿarḍuhā sittūna mīlan fī kulli zāwiyatin minhā ahlun mā yarawna al-ākharīna yaṭūfu ʿalayhimu al-muʾminu
Transliteration generated from the Arabic vowel marks
The full narration
Abu Bakr b. Abdullah b. Qais reported on the authority of his father that Allah's Messenger (ﷺ) said that in Paradise there would be a tent made of a single hollowed pearl, the breadth of which would be sixty miles from all sides and there would live a family in each corner and the other would not be able to see the believer who goes around them
Source
Ṣaḥīḥ Muslim · 7159