Imam Ali (AS) said, Using obscene language with one who is at your level is a pecking like the pecking of two cockerels, and a quarrelling like the quarrelling of two dogs, they will never separate until they are wounded or humiliated, and this is neither the act of the wise nor the practice of the intelligent; and it may be that he (your rival) shows forbearance towards you, thereby becoming greater than you and more honourable, while you remain lower than him and more contemptible.