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:624Ismāʿīl b. Abān > Yaʿqūb b. ʿAbdullāh al-Qummī > Jaʿfar b. Abū al-Mughīrah > Saʿīd b. Jubayr > Ibn ʿAbbās

[Machine] "Memorize this hadith, do not let it escape from you, for it is not like the Quran, which is collected and preserved. If you do not memorize this hadith, it will escape from you, and one of you may say, 'I narrated it yesterday, so I will not narrate it today, but I will narrate what I heard yesterday.' Instead, narrate it today and narrate it tomorrow."  

الدارمي:٦٢٤أَخْبَرَنَا إِسْمَاعِيلُ بْنُ أَبَانَ حَدَّثَنَا يَعْقُوبُ بْنُ عَبْدِ اللَّهِ الْقُمِّيُّ حَدَّثَنَا جَعْفَرُ بْنُ أَبِي الْمُغِيرَةِ عَنْ سَعِيدِ بْنِ جُبَيْرٍ عَنِ ابْنِ عَبَّاسٍ قَالَ

«تَذَاكَرُوا هَذَا الْحَدِيثَ لَا يَنْفَلِتْ مِنْكُمْ فَإِنَّهُ لَيْسَ مِثْلَ الْقُرْآنِ مَجْمُوعٌ مَحْفُوظٌ وَإِنَّكُمْ إِنْ لَمْ تَذَاكَرُوا هَذَا الْحَدِيثَ يَنْفَلِتْ مِنْكُمْ وَلَا يَقُولَنَّ أَحَدُكُمْ حَدَّثْتُ أَمْسِ فَلَا أُحَدِّثُ الْيَوْمَ بَلْ حَدِّثْ أَمْسِ وَلْتُحَدِّثِ الْيَوْمَ وَلْتُحَدِّثْ غَدًا»