Islam is the complete code of life.Qur'an is the miracle of of the universe.In The Holy Qur'an there are a number of verses which gives the clear indication of basic teachings on behavior,conduct and human attitude.These are given in the below:
(4:86) When a ( courteous) greetings is offered to you,meet it with a greeting still more courteous.
or ( at least) of equal courtesy.
(24:61) Do it even if you enter your own houses.
(24:27) Or you enter other houses.
(25:63) Or even if an ignorant man addresses you.
(4:94) Say not to anyone who offers you a salutation,"You are not a believer".
(49:9) If two parties among the believers fall into a quarrel , make peace between them;but if one of them transgresses beyond bounds against the other, then you should fight the against party that transgresses until the other party complies with commands of Allah. But if the other party complies, make peace between them with justice, and be fair.
(49:10) All believers are brothers to each other.
(33:70) Always say what is directed to the Right.
(22:30) Shun the world that is false.
(17:53) Say those things that are best
(31:19) Speak fair to the people.
(31:190 Lower your voice and be moderate in your bearing.
(6:152) Whenever you give words, do justice even though it be against a kinsman.
(24:27) Enter not any one's house without permission.
(2:42) Cover not Truth with falsehood, nor conceal the Truth when you know what it is.
(31:18) Turn not thy cheek away from men in scorn, and walk not in the earth exultantly; Allah loves not any man proud and boastful.
(6:151) Come not near shameful deeds, whether open or secret.
(7:33) Avoid shameful deeds.
(23:3) Avoid vain talk..
(28:55) Do not listen to vain talk.
(25:72) Witness no falsehood. if you have to pass by futility, pass by it with honourable avoidance.
(24:19) Do not spread scandal.
(17:37) Walk not on earth with insolence, for you cannot rend the earth asunder, nor reach the mountains in height.
(25:73) Walk on earth in humility.