The Messenger of Allah ﷺ said, "The rivers of Paradise flow out from hills, or from beneath mountains, of musk."
قال رسول الله ﷺ: أنهار الجنة تخرج من تلال- أو من تحت جبال- مسك.
Ibn Abu Hatim narrated it, as in Tafsir Ibn Kathir (8/386), as did Ibn Hibban (7408) and Abu Naeem in Sifat al-Jannah (313), all of them through routes from Assad bin Musa, who said, Abdul-Rahman bin Thabit bin Thawban told us, Ataa bin Qurrah told us, from Abdullah bin Damrah, from Abu Hurairah, who said, and then he related it.Its chain is hasan, for all the men in the chain of transmission are hasan al-hadith.