4/624 – Al-Nawwas ibn Samʿān (may Allah be pleased with him) reported: I asked the Messenger of Allah (peace and blessings be upon him) about righteousness and sin. He replied, “Righteousness is good character, and sin is what troubles your soul and you would hate for people to find out about.” Narrated by Muslim.

5/625 – ʿAbd Allāh ibn ʿAmr ibn al-ʿĀṣ (may Allah be pleased with them) said: The Messenger of Allah (peace and blessings be upon him) was neither obscene nor deliberately vulgar, and he used to say, “The best of you are those with the finest character.” Agreed upon.

6/626 – Abū al-Dardāʾ (may Allah be pleased with him) reported that the Prophet (peace and blessings be upon him) said, “Nothing is heavier on the believer’s scale on the Day of Resurrection than good character, and Allah detests the obscene, foul-mouthed person.” Narrated by al-Tirmidhī, who graded it ḥasan ṣaḥīḥ.

Al-badhi: the one who speaks with obscenity and vile language.

[Explanation]

These aḥādīth were cited by al-Nawawī (may Allah have mercy on him) in the chapter on good character in his book Riyāḍ al-Ṣāliḥīn, and some of them have already been mentioned earlier.

As for the ḥadīth of al-Nawwas ibn Samʿān (may Allah be pleased with him) in which the Prophet (peace and blessings be upon him) said, “Al-birr is good character,” its wording has already been explained and we have clarified that good character is attained