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.
abudawud:3648Aḥmad b. Yūnus > Abū Shihāb > al-Ḥadhhāʾ > Abū al-Mutawakkil al-Nājī > Abū Saʿīd al-Khudrī

"We used not to write anything but the Tasha-hud and the Qur'an."  

أبو داود:٣٦٤٨حَدَّثَنَا أَحْمَدُ بْنُ يُونُسَ حَدَّثَنَا أَبُو شِهَابٍ عَنِ الْحَذَّاءِ عَنْ أَبِي الْمُتَوَكِّلِ النَّاجِيِّ عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ قَالَ

مَا كُنَّا نَكْتُبُ غَيْرَ التَّشَهُّدِ وَالْقُرْآنِ