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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
ahmad-zuhd:684 – ʿAbdullāh > Jaʿfar b. Muḥammad b. Fuḍayl from Ahl Raʾs al-ʿAyn > Muḥammad b. Ḥimyar al-Hilālī > Ismāʿīl b. ʿAyyāsh > Shuraḥbīl b. Muslim > ʿUthmān

[Machine] That Uthman ibn Affan used to feed the people the food of the caliphate, and he would enter his house and eat vinegar and oil.  

الزهد لأحمد:٦٨٤ – حَدَّثَنَا عَبْدُ اللَّهِ حَدَّثَنِي جَعْفَرُ بْنُ مُحَمَّدِ بْنِ فُضَيْلٍ مِنْ أَهْلِ رَأْسِ الْعَيْنِ حَدَّثَنَا مُحَمَّدُ بْنُ حِمْيَرٍ الْهِلَالِيُّ حَدَّثَنَا إِسْمَاعِيلُ بْنُ عَيَّاشٍ عَنْ شُرَحْبِيلَ بْنِ مُسْلِمٍ

«أَنَّ عُثْمَانَ بْنَ عَفَّانَ ؓ كَانَ يُطْعِمُ النَّاسَ طَعَامَ الْإِمَارَةِ وَيَدْخُلُ إِلَى بَيْتِهِ فَأَكَلَ الْخَلَّ وَالزَّيْتَ»