ذِكْرُ اسْتِحْبَابِ صَوْمِ يَوْمِ الِاثْنَيْنِ، لِأَنَّ فِيهِ وُلِدَ رَسُولُ اللَّهِ ﷺ وَفِيهِ أُنْزِلَ عَلَيْهِ ابْتِدَاءُ الْوَحْيِ
[Machine] A Bedouin man asked the Prophet صلى الله عليه وسلم about fasting for a lifetime. The Prophet صلى الله عليه وسلم replied, "He neither fasts nor breaks his fast." Another person stood up and asked, "O Messenger of Allah, what do you think about a man who fasts three days every month?" The Prophet صلى الله عليه وسلم replied, "That is the fasting for a lifetime." The person then asked, "What do you think about a man who fasts on Mondays?" The Prophet صلى الله عليه وسلم said, "That is the day I was born and the day in which revelation was sent to me." The person asked again, "What do you think about a man who fasts one day and breaks his fast the next day?" The Prophet صلى الله عليه وسلم replied, "That is the fasting of my brother Dawood (David)."
أَنَّ أَعْرَابِيًّا سَأَلَ النَّبِيَّ ﷺ عَنْ صَوْمِ الدَّهْرِ؟ فَقَالَ النَّبِيُّ ﷺ «لَا صَامَ وَلَا أَفْطَرَ» أَوْ قَالَ «لَا أَفْطَرَ وَلَا صَامَ» فَقَامَ غَيْرُهُ فَقَالَ يَا رَسُولَ اللَّهِ أَرَأَيْتَ رَجُلًا يَصُومُ مِنْ كُلِّ شَهْرٍ ثَلَاثَةَ أَيَّامٍ؟ قَالَ «ذَاكَ صَوْمُ الدَّهْرِ» قَالَ أَرَأَيْتَ رَجُلًا يَصُومُ يَوْمَ الِاثْنَيْنِ قَالَ «ذَاكَ يَوْمٌ وُلِدْتُ فِيهِ وَيَوْمٌ أُنْزِلَ عَلَيَّ» قَالَ أَرَأَيْتَ رَجُلًا يَصُومُ يَوْمًا وَيُفْطِرُ يَوْمًا؟ قَالَ «ذَاكَ صَوْمُ أَخِي دَاوُدَ»