(50) باب ذِكْرِ النَّبِيِّ صلى الله عليه وسلم وَرِوَايَتِهِ عَنْ رَبِّهِ
Narrated Abu Huraira:
The Prophet (ﷺ) said that your Lord said, "Every (sinful) deed can be expiated; and the fast is for Me, so I will give the reward for it; and the smell which comes out of the mouth of a fasting person, is better in Allah's Sight than the smell of musk." (See Hadith No. 584)
Reference: Sahih al-Bukhari 7538
In-book reference: Book 97, Hadith 163
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 9, Book 93, Hadith 629