We said, "Messenger of Allah, tell us about Paradise. What is it built of?"He replied, "A brick of gold and a brick of silver. Its mortar is fragrant musk, its pebbles are pearls and rubies, and its soil is saffron. Whoever enters it lives in bliss and never suffers, abides forever and never dies, his garments never wear out, and his youth never fades."
قلنا: يا رسول الله، حدثنا عن الجنة، ما بناؤها؟ قال: لبنة ذهب ولبنة فضة، وملاطها المسك الأذفر، وحصباؤها اللؤلؤ والياقوت، وترابها الزعفران، من يدخلها ينعم ولا يبأس، ويخلد ولا يموت، لا تبلى ثيابه، ولا يفنى شبابه.
Ahmad (8043), Abd bin Humayd (1420), and Ibn Hibban (7387) all narrated it, all of them through the route of Zuhayr bin Muawiya, who said, Abu Mujahid Saad Tai told us, Abu Mudalla, the freedman of the Mother of the Believers, told us that he heard Abu Hurairah say what follows. Its chain is hasan because of Abu Mudalla, for he is hasan al-hadith. Ibn Majah affirmed his reliability, and Ibn Hibban mentioned him among the trustworthy narrators. The discussion of Abu Mudalla is set out in detail in the Book of Fasting.His statement "its mortar" is with the mim vowelled as kasra, meaning the mud that the builder places between each two layers of the bricks of a wall.It is also reported from Ibn Umar that he said, the Messenger of Allah ﷺ was asked, "What is it like?" He said, "Whoever enters Paradise lives and does not die, enjoys comfort and does not suffer, his clothes never wear out, and his youth never fades." It was said, "O Messenger of Allah, how is it built?" He said, "A brick of silver and a brick of gold, its mortar is musk, its pebbles are pearls and rubies, and its soil is saffron."Ibn Abu Shayba (35087) and Abu Naeem in Sifat al-Jannah (96) both narrated it through the route of Muawiya bin Hisham, who said, Ali bin Salih told us, from Umar bin Rabia, from Hasan, from Ibn Umar, and he related it.In the chain is Umar bin Rabia, of whom Ibn Hajar said, "Acceptable," meaning when corroborated, and I did not find any corroborating narration for him. Likewise in it is Hasan Basri, and he narrated with an, indicating a possible break in transmission.