Good Manners
Hadith - Bukhari's Book of Manners # 285, Hakim, and Abu Dawud
... Abu Huraira, r.a., said that the Prophet of Allah, saaws, said, "If one has good manners, one may attain the same level of merit as those who spend their nights in prayer."
Hadith - Sahih Bukhari, Muslim, Nasa'i, Abu Dawud, Ibn Majah, and Tabarani
Abu Huraira, r.a., reported that the Prophet, saaws, said, "... Having a sense of shame is one branch of faith."