Musnad Ahmad 4416

Translation

✧ How bad it is for one of them (or one of you) to say: 'I forgot such-and-such a verse.' Rather, he was made to forget. Keep the Quran in mind, for it escapes from the chests of men faster than camels from their tethers. He said: Or he said: 'from its tether.'

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Other narrations of this report

Sunan an-Nasa'i 943

Narrators

1. 1
   ʿAbdullāh b. Masʿūd

   One of the earliest and foremost (al-sābiqūn al-awwalūn), and one of the leading scholars among the Companions; his virtues are manyd. 28 AH, or 32 AH, 33 AH
   عَبْدُ اللهِ بْنُ مَسْعُودٍمن السابقين الأولين ، ومن كبار العلماء من الصحابة ، مناقبه جمة
   عن
2. 2
   Shaqīq b. Salamah

   trustworthy (thiqah)d. Khalīfah b. Khayyāṭ said: 82 AH, Ibn Mandah said: 99 AH
   أَبِي وَائِلٍثقة
   عن
3. 3
   Manṣūr b. al-Muʿtamir

   Trustworthy (thiqah), reliable (thabt), and he did not commit tadlīs (lā yudallis)d. 132 AH, or 133 AH
   مَنْصُورُ بْنُ الْمُعْتَمِرِثقة ثبت ، وكان لا يدلس
   حدثنا
4. 4
   ʿĀṣim b. Bahdalah

   Truthful (ṣadūq) with some errors (awhām)d. 127 AH, or: 128 AH
   عَاصِمُ بْنُ بَهْدَلَةَ .صدوق له أوهام
   حدثنا
5. 5
   Ḥammād b. Zayd

   Trustworthy (thiqah), firmly reliable (thabt), a jurist (faqīh).d. 177 AH, also said 179 AH
   حَمَّادُ بْنُ زَيْدٍثقة ثبت ، فقيه.
   حدثنا
6. 6
   ʿAffān

   trustworthy, precise (thiqah thabt)d. 219 AH, or 220 AH
   عَفَّانُثقة ثبت
   حدثنا
7. 7
   Aḥmad b. Ḥanbal

   Trustworthy (thiqah), a memorizer (ḥāfiẓ), a jurist (faqīh), an authority (ḥujjah).d. 241 AH, Abū Umayyah Muḥammad b. Ibrāhīm al-Ṭarsūsī said: 242 AH, and no one followed him in his view
   أحمد بن حنبلثقة حافظ فقيه حجة

Who each narrator was and how reliable, from hdith.com

Latin names and English verdicts with a dotted underline are machine translations, not reviewed.