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:12813[Chain 1] Abū ʿAlī al-Rūdhbārī > Abū Bakr Aḥmad b. Kāmil al-Qāḍī > Muḥammad b. Mūsá b. Ḥammād al-Barbarī [Chain 2] Abū Muḥammad al-Sukkarī > Abū Bakr al-Shāfiʿī > Jaʿfar b. Muḥammad b. al-Azhar > al-Mufaḍḍal b. Ghassān al-Ghallānī > al-Wāqidī > Saʿīd b. ʿAbdullāh b. Abū al-Abyaḍ > ʿUbaydullāh b. Miqsam > Saʾalt Mālik b. Aws b. al-Ḥadathān > al-Nafl

[Machine] I rode horses in the period of ignorance and I did not realize that people only perform voluntary acts of worship (such as giving a fifth of their income as charity).  

البيهقي:١٢٨١٣أَخْبَرَنَا أَبُو عَلِيٍّ الرُّوذْبَارِيُّ أنا أَبُو بَكْرٍ أَحْمَدُ بْنُ كَامِلٍ الْقَاضِي ثنا مُحَمَّدُ بْنُ مُوسَى بْنِ حَمَّادٍ الْبَرْبَرِيُّ ح وَأَخْبَرَنَا أَبُو مُحَمَّدٍ السُّكَّرِيُّ أنا أَبُو بَكْرٍ الشَّافِعِيُّ ثنا جَعْفَرُ بْنُ مُحَمَّدِ بْنِ الْأَزْهَرِ قَالَا ثنا الْمُفَضَّلُ بْنُ غَسَّانَ الْغَلَّانِيُّ ثنا الْوَاقِدِيُّ أَخْبَرَنِي سَعِيدُ بْنُ عَبْدِ اللهِ بْنِ أَبِي الْأَبْيَضِ عَنْ عُبَيْدِ اللهِ بْنِ مِقْسَمٍ قَالَ سَأَلْتُ مَالِكَ بْنَ أَوْسِ بْنِ الْحَدَثَانِ عَنِ النَّفْلِ فَقَالَ

لَقَدْ رَكِبْتُ الْخَيْلَ فِي الْجَاهِلِيَّةِ وَمَا أَدْرَكْتُ النَّاسَ يُنَفِّلُونَ إِلَّا مِنَ الْخُمُسِ