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:764ʿAbdullāh from my father > Wakīʿ > Jaʿfar > Maymūn

[Machine] Abu Darda said, "Woe to the one who does not learn once, and woe to the one who learns and then does not act upon it seven times."  

الزهد لأحمد:٧٦٤حَدَّثَنَا عَبْدُ اللَّهِ حَدَّثَنِي أَبِي حَدَّثَنَا وَكِيعٌ عَنْ جَعْفَرٍ عَنْ مَيْمُونٍ قَالَ

قَالَ أَبُو الدَّرْدَاءِ وَيْلٌ لِلَّذِي لَا يَعْلَمُ مَرَّةً وَوَيْلٌ لِلَّذِي يَعْلَمُ ثُمَّ لَا يَعْمَلُ سَبْعَ مَرَّاتٍ