Narrated AbuMalik Al-Ash’ari ; Ali ibn Abu Talib:
Allah’s Messenger (peace be upon him) said:There is in the Paradise an apartment, the exterior of which can be seen from its interior, and the interior of which can be seen from its exterior.Such apartments have been prepared for those who are polite in talk, provide food (to the needy), fast frequently and observe the tahajjud prayer when the people are asleep.
Transmitted by Ahmad, Bayhaqi transmitted it in Shu’ab al-Iman. Tirmidhi transmitted something similar from Ali.In his version the words are:He who is sweet in talk.[Tirmidhi]