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:130al-ʿAbbās b. Sufyān > Zayd b. Ḥubāb > Rajāʾ b. Abū Salamah > Khālid b. Ḥāzim > Hishām b. Muslim al-Qurashī

[Machine] What do you do with matters? I said, "If it weren't for matters, knowledge would be lost." He said, "Do not say that knowledge is lost. Indeed, knowledge does not get lost when the Quran is recited, but if you were to say that jurisprudence is lost."  

الدارمي:١٣٠أَخْبَرَنَا الْعَبَّاسُ بْنُ سُفْيَانَ أَنبَأَنَا زَيْدُ بْنُ حُبَابٍ أَخْبَرَنِي رَجَاءُ بْنُ أَبِي سَلَمَةَ قَالَ حَدَّثَنِي خَالِدُ بْنُ حَازِمٍ عَنْ هِشَامِ بْنِ مُسْلِمٍ الْقُرَشِيِّ قَالَ كُنْتُ مَعَ ابْنِ مُحَيْرِيزٍ بِمَرْجِ الدِّيبَاجِ فَرَأَيْتُ مِنْهُ خَلْوَةً فَسَأَلْتُهُ عَنْ مَسْأَلَةٍ فَقَالَ

لِي مَا تَصْنَعُ بِالْمَسَائِلِ؟ قُلْتُ لَوْلَا الْمَسَائِلُ لَذَهَبَ الْعِلْمُ قَالَ «لَا تَقُلْ ذَهَبَ الْعِلْمُ إِنَّهُ لَا يَذْهَبُ الْعِلْمُ مَا قُرِئَ الْقُرْآنُ وَلَكِنْ لَوْ قُلْتَ يَذْهَبُ الْفِقْهُ»