Musnad Ahmad 21994

Translation

✧ I was riding behind the Prophet ﷺ, and he said: Do you know what God's [mighty and majestic] right upon His servants is? I said: God and His Messenger know best. He said: That they worship Him and do not associate anything with Him. He said: Do you know what the servants' right upon God is if they do that? That He forgive them and not punish them.

Grades by grader

Narrators

1. 1
   Muʿādh b. Jabal

   well-known, among the notable Companionsd. 17 AH, or: 18 AH
   مُعَاذ بْن جَبَلمشهور ، من أعيان الصحابة
   عن
2. 2
   ʿAmr b. Maymūn al-Awdī

   trustworthy (thiqah), devout (ʿābid)d. al-Haytham b. ʿAdī said: died during the governorship of al-Ḥajjāj, before al-Jamājim. Abū Nuʿaym said, and Muḥammad b. ʿAbdullāh b. Numayr: he died in 74 AH. ʿAmr b. ʿAlī said, and Abū Bakr b. Abī Shaybah, and Abū ʿUbayd: died in the year 75 AH. Khalīfah b. Khayyāṭ said: he died in 76 AH, also said: the year 74 AH. And he said elsewhere: the year 76 AH or 77 AH
   عَمْرِو بْنِ مَيْمُونٍثقة عابد
   عن
3. 3
   Abū Isḥāq al-Sabīʿī

   Trustworthy (thiqah), a prolific narrator (mukthir), devout (ʿābid); his memory became confused (ikhtalaṭa) at the end of his lifed. Ibn ʿUyaynah said 126 AH, Yaḥyā b. Saʿīd said 127 AH, Abū Nuʿaym said 128 AH, ʿAmr b. ʿAlī said 129 AH, Ibn Maʿīn said 132 AH
   أَبِي إِسْحَاقَثقة مكثر عابد , اختلط بآخره
   عن
4. 4
   Maʿmar b. Rāshid

   Trustworthy (thiqah), reliable (thabt), excellent, except that there is some weakness in his narration from Thābit, al-Aʿmash, ʿĀṣim b. Abī al-Najūd and Hishām b. ʿUrwah, and likewise in what he narrated in Basrad. at the beginning of 150 AH, or: 152 AH, or: 153 AH, or: 154 AH, 155 AH
   مَعْمَرٌثقة ثبت فاضل ، إلا أن في روايته عن ثابت والأعمش وعاصم بن أبي النجود ، وهشام بن عروة شيئا ، وكذا فيما حدث به بالبصرة
   حدثنا
5. 5
   ʿAbd al-Razzāq

   Trustworthy (thiqah), a retentive memorizer (ḥāfiẓ), a renowned author (muṣannif); he went blind at the end of his life and his memory changed (taghayyara), and he had Shiite leanings (kāna yatashayyaʿ)d. 211 AH
   وَعَبْدُ الرَّزَّاقِثقة حافظ مصنف شهير ، عمي في آخر عمره فتغير ، وكان يتشيع
   حدثنا
6. 6
   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.