The Prophet Muhammad
Do what you should do when you should do it.
Refuse to do what you should not do;
And, when it is not clear, wait until you are sure.
Avoid three qualities: Jealousy, greed, and arrogance. Be pious in you rinner self and outer life: if you have behaved badly, then do a good deed right away; do not ak anything from anyone; do not borrow anything from anyone; and do not make yourself a judge between two people.