Sunan At-Tirmidhi

Ali narrated that the Messenger of Allah (s.a.w) said:""Indeed in Paradise there are chambers whose outside can be seen from their inside, and their inside can be seen fom their outside."" A Bedouin stood and said: ""Who are they for O Prophet of Allah?"" he said: ""For those who speak well, feed others, fast regularly, and perform Salat for Allah during the night while the people sleep