SHAFAQNA – One day the Prophet of Islam (PBUH) noticed a woman whilst fasting was swearing at her servant. The Prophet (PBUH) asked for food and told that woman: Eat this food! The woman said: I am fasting! The Prophet (PBUH) asked: How can you be fasting whilst you have sworn at your servant? How few are those who really fast! And how many are those who tolerate hunger! Fasting is not just to refrain from eating and drinking .
 Osul Kafi, Vol. 4, page 88.