Fasting is a great virtue, a shield from sin

[Roohi]

Narrated Abu Huraira (): The Messenger of Allah (ﷺ) said: Allah Almighty said,
“All the deeds of the children of Adam are for them, except fasting which is for Me, and I will give the reward for it.” (The Messenger of Allah said): “Fasting is a shield from the fire and from sin. If one of you is fasting, he should avoid sexual relations with his wife and arguments. If somebody should fight or argue with him, he should say, ‘I am fasting.’ By Him in Whose Hand is my soul, the unpleasant smell coming from the mouth of a fasting person is better in the sight of Allah than the smell of musk. There are two pleasures for the fasting person, one at the time of breaking his fast and the other when he meets his Lord; then he will be pleased because of his fasting.”

[Volume 3, Book 31, Number 128]

أَبَا هُرَيْرَةَ ـ رضى الله عنه ـ يَقُولُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم قَالَ اللَّهُ كُلُّ عَمَلِ ابْنِ آدَمَ لَهُ إِلاَّ الصِّيَامَ، فَإِنَّهُ لِي، وَأَنَا أَجْزِي بِهِ‏.‏ وَالصِّيَامُ جُنَّةٌ، وَإِذَا كَانَ يَوْمُ صَوْمِ أَحَدِكُمْ، فَلاَ يَرْفُثْ وَلاَ يَصْخَبْ، فَإِنْ سَابَّهُ أَحَدٌ، أَوْ قَاتَلَهُ فَلْيَقُلْ إِنِّي امْرُؤٌ صَائِمٌ‏.‏ وَالَّذِي نَفْسُ مُحَمَّدٍ بِيَدِهِ لَخُلُوفُ فَمِ الصَّائِمِ أَطْيَبُ عِنْدَ اللَّهِ مِنْ رِيحِ الْمِسْكِ، لِلصَّائِمِ فَرْحَتَانِ يَفْرَحُهُمَا إِذَا أَفْطَرَ فَرِحَ، وَإِذَا لَقِيَ رَبَّهُ فَرِحَ بِصَوْمِهِ