Muslim narrated in the Sahih on the authority of Abu Hurairah, who said that the Messenger of God, may God’s prayers and peace be upon him, said: God Almighty said, “Every deed of the son of Adam is for him except fasting, for it is for Me and I will reward for it, and fasting is a shield. So if it is a day when one of you fasts, then he will not commit obscenities on that day, nor will he be arrogant.” If someone insults him or fights him, let him say, “I am a fasting person. Indeed, I am fasting.” By the One in Whose Hand is the soul of Muhammad, the breath of the mouth of a fasting person is better before God on the Day of Resurrection than the scent of musk. And the fasting person has two joys. He rejoices in them: when he breaks his fast, he rejoices in breaking his fast, and if he meets his Lord Almighty, he rejoices in his fast .