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:771ʿAbdullāh from my father > ʿAbd al-Ṣamad > Abū al-Ashhab > al-Ḥasan

[Machine] Abu Darda used to say: "Whoever follows his own desires and is affected by everything he sees in people, his sorrow will endure and his anger will never dissipate."  

الزهد لأحمد:٧٧١حَدَّثَنَا عَبْدُ اللَّهِ حَدَّثَنِي أَبِي حَدَّثَنَا عَبْدُ الصَّمَدِ حَدَّثَنَا أَبُو الْأَشْهَبِ عَنِ الْحَسَنِ قَالَ

كَانَ أَبُو الدَّرْدَاءِ يَقُولُ مَنْ يُتْبِعْ نَفْسَهُ كُلَّ مَا يَرَى فِي النَّاسِ يَطُلْ حُزْنُهُ وَلَا يَشِفُّ غَيْظُهُ