* Truth of speech: It stands for telling the very reality of a thing without falsification or concealment.
* Truth of deeds: It stands for the conformity of deeds with words, such as the commitment to oath and fulfillment of pledges.
* True determination: It stands for the determination to do good.
* True intention: It stands for purifying the intent from blemishes of showiness.
source : http://www.maaref-foundation.com