Excerpts from Prophet Muhammad's ethics
Prophet Muhammad (PBUH & HP) said: God has commanded me generosity & piety, and has forbidden me from stinginess & alienation. And there's nothing hateful for the God (SWT) more than being stingy and behaving badly, because these things spoil the deeds just like how the mud spoils the honey.
Holy prophet Muhammad (PBUH&HP) was so shy, whenever he's been asked for something, he gave it immediately. And if he hated something, it could be noticed on his face.
He had a gentle nice skin, kind soft exterior, never told someone what he dislikes (because of his generous soul), and if he ever knew a bad thing about a certain person, he (PBUH&HP) would never say what's wrong with that 'specific' person, instead, he would say: what's wrong with people doing so and saying so (without mentioning who do these things)
And it's been told that he (PBUH&HP) was so shy in a way that he would never stare or keep looking at a person's face.