The Messenger of Allah ﷺ said, "The martyrs are on the banks of a river called Bariq, by the gate of Paradise, in a green dome. Their provision comes out to them from Paradise morning and evening."
قال رسول الله ﷺ: الشهداء على بارق نهر بباب الجنة في قبة خضراء يخرج عليهم رزقهم من الجنة بكرة وعشيا.
Ahmad (2390), Ibn Abu Asim in Jihad (199), and Hakim (742) all narrated it through routes from Ibn Ishaq, who said, Harith bin Fudayl Ansari told me, from Mahmud bin Labeed Ansari, from Ibn Abbas, and he related it. Ibn Hibban (4658) graded it sahih.Its isnad is hasan because of Muhammad bin Ishaq. Ibn Kathir said in his tafsir (2/164), "It is a jayyid isnad." As for Hakim, he said, "A hadith sahih in isnad according to the criterion of Muslim."