In addition to this, you will undertake charity for education, for medicine and hospitals, for poor feedings and other good causes. And just as, traditionally, the different types of charities such as giving away gold and cows and land were the means for using the body in sacred activities, so also you will now be using your body in a sacred way. Since you will not be doing any harmful or prohibited activities, you will not put yourself under the spell of the sense of doership and possessiveness. You will free yourself from bondage to these two qualities. All of this can be described as bodily penance.
Vocal penance is the use of good and noble words.
Even when you speak the truth you should not be severe or sharp-tongued. You must be careful not to hurt anyone. In this context, the Gita has said that truth must be sweet and nonviolent. Use the sacred tongue which has been given to you for giving joy and delight to others and for helping them. Do not give any suffering to another's mind.