al-Hasan al-Basri الحسن البصري · Etiquette

"Shall I not tell you of the best charity? A daughter who comes back to you and has no other breadwinner apart from you." (Daif)

"The Messenger of Allah(ﷺ) forbade plucking out white hairs and said: 'It is the light of the believer.'"

"The Messenger of Allah(ﷺ) was in Baqi', and a man called out to another man: 'O Abul-Qasim!' The Messenger of Allah(ﷺ) turned to him, and he said: 'I didn't mean you.' The Messenger of Allah(ﷺ) said: 'Call yourselves by my name but do not call yourselves by my Kunyah.'"

"(Allah's saying) "Nor insult one another by nicknames(Surah Al Hujarat 49:11)" was revealed concerning us, the Ansar. When the Prophet(ﷺ) came to us, a man among us would have two or three names, and the Prophet(ﷺ) might call him by one of those names, only to be told: "O Messenger of Allah(ﷺ), he does not like that name." Then:"Nor insult one another by nicknames." was revealed."