The Messenger of Allah ﷺ said, "In Paradise there are chambers whose insides can be seen from the outside and whose outsides can be seen from the inside."An Arabi asked, "Messenger of Allah, for whom are they?"He replied, "For those who speak kindly, feed others, and pray to Allah by night while people sleep."
حدثنا عبد الله حدثني عباد بن يعقوب الأسدي أبو محمد حدثنا محمد بن فضيل عن عبد الرحمن بن إسحاق عن النعمان بن سعد
قال رسول الله ﷺ إن في الجنة لغرفا يرى بطونها من ظهورها وظهورها من بطونها فقال أعرابي يا رسول الله لمن هي قال لمن أطاب الكلام وأطعم الطعام وصلى لله بالليل والناس نيام
Its isnad is daif, because of Abdul-Rahman bin Ishaq as well. Abbad bin Yaqub Asadi was reliable in his narration, though Shia in his views, and Bukhari and Abu Hatim and others narrated from him. See Al-Jarh wal-Tadil 3/1/88. Tirmidhi narrated this hadith, 3:324, through Ali bin Mushir from Abdul-Rahman, and said, "This is a rare hadith, and some scholars of hadith have criticized this Abdul-Rahman bin Ishaq regarding his memory. He is Kufan, while Abdul-Rahman bin Ishaq Qurashi is Madinan, and he is more reliable than this one."