reported Abu Umaamah:

“I guarantee a house in

Jannah (Paradise) for one who gives up arguing, even if he is in the

right; and I guarantee a house in the middle of Jannah for one who

abandons lying even for the sake of fun; and I guarantee a house in the

highest part of Jannah for one who has good manners”

[Prophet Muhammad SAWS - reported by Imam Abu Dawud]