Hadith.1861 - The Messenger of Allah (swt) (peace be upon him and his family) heard a woman insulting her servant while she was fasting. The Messenger of Allah (swt) (peace be upon him and his family) called for food and said to her, "Eat."
She replied: "I am fasting."
He (sw) said: "How can you be fasting when you have insulted your servant? Indeed, fasting is not merely abstaining from food and drink."