Merits of Politeness

And by the Mercy of Allâh, you dealt with them gently. And had you been severe and harsh hearted, they would have broken away from about you; so pass over (their faults), and ask (Allâh's) Forgiveness for them; and consult them in the affairs. Then when you have taken a decision, put your trust in Allâh, certainly, Allâh loves those who put their trust (in Him).

Aal e Imran 159