'A'ishah Radiyallahu 'anha narrates that Rasullullah Sallallahu 'alaihi wasallam said: Indeed, the most perfect believer in faith is one who has the best manners and is the kindest to his family. (Tirmidhi: 2612)
'A'ishah Radiyallahu 'anha narrates: I heard Rasullullah Sallallahu 'alaihi wasallam saying: Verily, a Mu'min by his good conduct acquires the rank of one who fasts and stands in Salat during the night. (Abu Dawud: 4798)