Silence is the best reply to a fool.

Dislike in yourself what you dislike in others.

Be a good man to Allah and a bad man to yourself (desires); and be one of the commoners among the people

The best deed of a great man is to forgive and forget.

Fear only the will of God and you will have no cause to fear anyone else.

You should desire for others what you desire for yourself, and hate for others what you hate for yourself. Do not oppress, just as you do not like to be oppressed. Do good to others just as you would like good to be done to you. Dislike in yourself what you dislike in others. Accept that treatment from others which you would like others to accept from you. Do not say to others what you do not like to be said to you.

If you find that somebody is not grateful for all that you have done for him, then do not get disappointed because often you will find that someone else feels under your obligation though you have done nothing for him and thus your good deeds will be compensated, and Allah will reward you for your goodness.