Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bayhaqi:8450Abū al-Ḥusayn ʿAlī b. Muḥammad b. ʿAbdullāh b. Bishrān > Abū Jaʿfar Muḥammad b. ʿAmr al-Razzāz > ʿAbd al-Malik b. Muḥammad > Rawḥ > Ibn Jurayj > ʿAmr b. Aws > ʿAbdullāh b. ʿAmr

[Machine] The Messenger of Allah ﷺ said, "The most beloved prayer to Allah the Exalted is the prayer of Dawud (David). He would sleep for half the night, then stand in prayer for one-third of it, and then sleep for the remainder. The most beloved fast to Allah the Exalted is the fast of Dawud. He would fast one day and break his fast the next day."  

البيهقي:٨٤٥٠أَخْبَرَنَا أَبُو الْحُسَيْنِ عَلِيُّ بْنُ مُحَمَّدِ بْنِ عَبْدِ اللهِ بْنِ بِشْرَانَ أنبأ أَبُو جَعْفَرٍ مُحَمَّدُ بْنُ عَمْرٍو الرَّزَّازُ ثنا عَبْدُ الْمَلِكِ بْنُ مُحَمَّدٍ ثنا رَوْحٌ ثنا ابْنُ جُرَيْجٍ عَنْ عَمْرِو بْنِ أَوْسٍ عَنْ عَبْدِ اللهِ بْنِ عَمْرٍو قَالَ

قَالَ رَسُولُ اللهِ ﷺ أَحَبُّ الصَّلَاةِ إِلَى اللهِ تَعَالَى صَلَاةُ دَاوُدَ كَانَ يَرْقُدُ شَطْرَ اللَّيْلِ ثُمَّ يَقُومُ ثُلُثَهُ بَعْدَ شَطْرِهِ ثُمَّ يَرْقُدُ آخِرَهُ وَأَحَبُّ الصِّيَامِ إِلَى اللهِ تَعَالَى صِيَامُ دَاوُدَ كَانَ يَصُومُ يَوْمًا وَيُفْطِرُ يَوْمًا  

أَخْرَجَهُ مُسْلِمٌ فِي الصَّحِيحِ مِنْ حَدِيثِ عَبْدِ الرَّزَّاقِ عَنِ ابْنِ جُرَيْجٍ وَأَخْرَجَاهُ مِنْ حَدِيثِ ابْنِ عُيَيْنَةَ عَنْ عَمْرِو بْنِ دِينَارٍ