Musnad Ahmad 3422

Translation

✧ Which of the two recitations do you count as first?” They said, “The recitation of ʿAbdullāh.” He said, “No, rather it is the last. The Qur'an was presented to the Messenger of God ﷺ once every year, but in the year in which he was taken, it was presented to him twice. ʿAbdullāh witnessed it and learned what was abrogated from it and what was changed.”

Grades by grader

Narrators

1. 1
   ʿAbdullāh b. ʿAbbās

   One of the Companions who narrated most prolifically (mukthirūn).d. 65 AH, or 67 AH, or 68 AH, also said: 69 AH, also said: 70 AH; also said: 73 AH
   عَبْدُ اللهِ بْنُ عَبَّاسٍأحد المكثرين من الصحابة
   عن
2. 2
   Abū Ẓibyān

   trustworthy (thiqah)d. 89 AH, or 90 AH, or 95 AH, or 96 or thereabouts
   أَبِي ظِبْيَانَثقة
   عن
3. 3
   al-Aʿmash

   Trustworthy (thiqah), a retentive memorizer (ḥāfiẓ), knowledgeable in the recitations (qirāʾāt), scrupulous (wariʿ), but he practiced concealment (tadlīs)d. Abū ʿAwānah said, and ʿAbd Allāh b. Dāwūd: 147 AH. Wakīʿ said, and more than one: 148 AH. And al-Khaṭīb considered it correct. Also said: 145 AH
   الْأَعْمَشُثقة حافظ , عارف بالقراءات ورع لكنه يدلس
   حدثنا
4. 4
   Muḥammad b. ʿUbayd

   Trustworthy (thiqah), with a good memory (yaḥfaẓ).d. 203 AH, or 204 AH, or 205 AH
   وَمُحَمَّدٌثقة يحفظ
   حدثنا
5. 5
   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.