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.
darimi:573Muḥammad b. Ḥumayd > Yaḥyá b. al-Ḍurays > Sufyān

[Machine] I heard Sufyan say, "Whoever is impatient will harm himself with a lot of knowledge, and whoever does not rush and seeks knowledge persistently until he attains it."  

الدارمي:٥٧٣أَخْبَرَنَا مُحَمَّدُ بْنُ حُمَيْدٍ حَدَّثَنَا يَحْيَى بْنُ الضُّرَيْسِ قَالَ

سَمِعْتُ سُفْيَانَ يَقُولُ «مَنْ تَرَأَّسَ سَرِيعًا أَضَرَّ بِكَثِيرٍ مِنَ الْعِلْمِ وَمَنْ لَمْ يَتَرَأَّسْ طَلَبَ وَطَلَبَ حَتَّى يَبْلُغَ»