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.
ahmad-zuhd:688ʿAbdullāh > Bī > Ḥammād b. Khālid > al-Zubayr b. ʿAbdullāh > Jaddah Lah Yuqāl Lahā Zuhaymah > Kān

[Machine] Uthman used to fast during the day and stay awake at night except for a short while at the beginning.  

الزهد لأحمد:٦٨٨حَدَّثَنَا عَبْدُ اللَّهِ حَدَّثَنِي أبِي حَدَّثَنَا حَمَّادُ بْنُ خَالِدٍ حَدَّثَنَا الزُّبَيْرُ بْنُ عَبْدِ اللَّهِ عَنْ جَدَّةٍ لَهُ يُقَالُ لَهَا زُهَيْمَةُ قَالَتْ

«كَانَ عُثْمَانُ ؓ يَصُومُ النَّهَارَ وَيَقُومُ اللَّيْلَ إِلَّا هَجْعَةً مِنْ أَوَّلِهِ»  


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Collected by Suyūṭī
suyuti:3-412bal-Zubyr b. ʿBd Allāh b. Rhymh > Jddath Qālt Kān
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السيوطي:٣-٤١٢b

" عن الزُّبيرِ بنِ عبدِ الله بنِ رهيمة، عن جدَّتهِ قالتْ: كانَ عثمانُ يصومُ الدَّهُرَ وَيَقومُ الليلَ إلا هجعةً مِنْ أولهِ ".  

[ش] ابن أبى شيبة