Fasting is one of the most beloved acts of worship to Allah and the most sublime acts of piety whereby a servant seeks closeness to his Almighty Lord. Thus, its reward is immense, and its merit is great. The honor afforded by Allah for the fasting people is ceaseless, for they deprive themselves of food, drink, and sexual relations, and so Allah Almighty gives them from His vast bounty and prefers them over others. In this Hadīth, the Prophet (may Allah's peace and blessings be upon him) mentions that the reward for every act of goodness, righteousness, and worship performed by a Muslim gets multiplied, with a good deed being rewarded tenfold, up to seven hundred fold. Allah Almighty says: {Whoever comes with a good deed will be rewarded tenfold.} [Surat al-An‘ām: 160] Allah Almighty also says: {The likeness of those who spend their wealth in the way of Allah is like a grain that sprouts seven ears, each ear bearing a hundred grains. And Allah gives multiple [rewards] for whom He wills. And Allah is All-Encompassing, All-Knowing.} [Surat al-Baqarah: 261] Then, the Prophet (may Allah's peace and blessings be upon him) mentioned that Allah Almighty said: "Except for fasting, for indeed it is for Me," i.e., fasting is excluded from these acts whose rewards are multiplied, for the reward of fasting can only be estimated by Allah Almighty. This is because fasting is a secret between a servant and his Lord. "and I will give reward for it," i.e., Allah Almighty is the One Who undertakes this reward and recompense, for the reward of fasting can only be enumerated by Allah, Exalted be He. He did not leave that to His angels. Rather, He undertook the giving of reward for it by Himself, and when Allah undertakes something by Himself, this denotes the immensity of this reward and recompense. This is because the fasting person abandons what his soul desires and the pleasures of food, drink, and copulation which are made lawful by Allah Almighty, in obedience to Allah, Exalted be He, and in pursuit of His love and approval. Then, the Prophet (may Allah's peace and blessings be upon him) stated that the fasting person has two moments of joy: The First Joy: "a moment of joy when he breaks his fast;" this joy occurs in the worldly life after he ends and breaks the fast and completes the worship, hoping for Allah's reward and bounty. The second joy occurs when he dies and obtains the reward and recompense. Then, the Prophet (may Allah's peace and blessings be upon him) swears that "the Khulūf (unpleasant smell) coming from his mouth" - the unusual foul smell that remains, after eating, in the mouth of a fasting person - "is more fragrant," i.e., better to Allah than the smell of musk. There is a difference of opinion regarding the Khulūf being more fragrant to Allah than the smell of musk. It means that it is more fragrant to Allah than the smell of musk to you; or it means that Allah Almighty will reward him in the Hereafter until his smell becomes more fragrant than the smell of musk; or that the person with the Khulūf will obtain a reward better than the smell of musk; or that the Khulūf is more rewardable than musk, which is recommended during Fridays and Eids; or that the angels find the Khulūf more pleasant than the smell of musk. The Hadīth points out the reward and merit of fasting..