From The Saying of The Messenger of Allah (pbuh) (23)

عن النواس بن سمعان الكلابي (رضي الله عنه) قال : "سألت رسول الله صلى الله عليه وسلم عن البر والإثم ؟ فقال " البر حسن الخلق . والإثم ما حاك في صدرك ، وكرهت أن يطلع عليه الناس " . الراوي: النواس بن سمعان الكلابي المحدث: مسلم - المصدر: صحيح مسلم - الصفحة أو الرقم: 2553 خلاصة حكم المحدث: صحيح
Nawwas bin Sam`an (May Allah be pleased with him) reported: I asked Messenger of Allah (PBUH) about virtue and sin, and he said, "Virtue is noble behaviour, and sin is that which creates doubt and you do not like people to know about it" (Muslim )
Commentary:
In this Hadith the messenger of Allah (pbuh) was the wisest because He defined both virtue and sin in a wonderful definition because man can know the difference between them by the intact nature.The virtue is the noble morals and the sin is something goes round in your chest and you hate people to know it .Then noble morals is the virtue that can reform our complicated life .
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. قال عبد الله بن عمرو بن العاص (رضي الله عنه ) : "لم يكن النبي صلى الله عليه وسلم فاحشا ولا متفحشا, وكان يقول : ( إن من خياركم أحسنكم أخلاقا ) الراوي: عبدالله بن عمرو بن العاص المحدث: البخاري - المصدر: صحيح البخاري - الصفحة أو الرقم 3559 خلاصة حكم المحدث: [صحيح]
Abdullah bin `Amr bin Al-`as (May Allah be pleased with them) reported: "Messenger of Allah (PBUH) did not obscene in talking nor did he like to listen to it. He used to say, "The best of you is the best among you in conduct " ( Al-Bukhari and Muslim )
Commentary :
This Hadith shows us the morality of Messenger of Allah (pbuh ) . He always encourage us to have the noble morals and follow him as he is a model to all people Muslims or non-Muslims .He is a messenger and social reformer and the world lost a lot by not embracing Islam and by not knowing him .