Saying of the Prophet of Islam Mohammad (PBUH) on Truth: He is not of me who, when he speaketh, speaketh falsely; who, when he promiseth, breaketh his promises; and who, when trust is reposed in him, faileth in his trust. No man is true in the truest sense of the word but he who is true in work, in deed, and in thought. Strive always to excel in virtue and truth. It is not worthy of a speaker of truth to curse people. Appropriate to yourselves the truth. Avoid lying. Say what is true, although it may be bitter and displeasing to people.