The Messenger of Allah ﷺ said, "In Paradise there is a chamber whose outside can be seen from within and whose inside can be seen from without. Allah has prepared it for those who feed others, speak gently, fast regularly, and pray at night while people sleep."
قال رسول الله ﷺ: إن في الجنة غرفة يرى ظاهرها من باطنها، وباطنها من ظاهرها، أعده الله لمن أطعم الطعام، وألان الكلام، وتابع الصيام، وصلى والناس نيام.
Ahmad narrated it (22905), and Ibn Khuzayma graded it sahih (2137), as did Ibn Hibban (509), all of them through the route of Abdul-Razzaq, and it is in his Musannaf (20883), from Mamar, from Yahya bin Abu Kathir, from Ibn Manaq or Abu Manaq, from Abu Malik Ashari, who related it.Its chain is hasan on account of Ibn Manaq, who is Abdullah bin Manaq Ashari, whose kunya is Abu Manaq. Ibn Hibban and Ajli deemed him trustworthy, and he was among the successors from the people of Syria. Abu Malik Ashari was a companion, and his name was Harith bin Harith, and he too was from Syria. So it is possible that the two of them met. The discussion of this is laid out in detail in the Book of Prayer.