With regards to the student of knowledge not having repugnant behaviour towards others and instead having beautiful manners, the Shaykh ‘Abdul ‘Azeez ibn Baaz rahimahullaah advises:
This is the akhlaaq (manners) of the believing men and believing women; these are their characteristics.
And the believing men and the believing women; they are awliyaa to each other.
Soorah at Tawbah (9) aayah 71
They are not enemies, they are not opponents; and rather they are awliyaa (allies) and ones who love each other – this is their description. Ones who love each other in that which occurs between them, advising each other, counselling each other to the Truth.
There is no malice between them nor hatred nor falsehood nor deceptiveness nor betrayal. Rather there is friendship and love and helping and counselling each other to the Truth.
The believing men and believing women are like this. So if you find malice in yourself towards your brother, or falsehood and oppression, then know that you have rendered your eemaan deficient and you have harmed your eemaan and you have weakened your eemaan with this blameworthy behaviour which you found in yourself, by way of betrayal or deceptiveness or backbiting or tale carrying or telling lies and oppression.
He sall Allaahu ‘alaihi wa sallam said:
Every Muslim is inviolable for (another) Muslim – his blood and his wealth and his honour.
Quoted in Wasaayaa wa tawjeehaat li tullaab il ‘ilm page 21 , translated by Nasser ibn Najam
 Reported by Muslim (2564) from the hadeeth of Aboo Hurayrah radiy Allaahu ‘anhu.