Musnad Ahmad 771

Translation

✧ I heard a man asking forgiveness for his parents while they were polytheists. I said, "Does a man ask forgiveness for his parents while they are polytheists?" He said, "Did not Ibrahim ask forgiveness for his father?" I mentioned that to the Prophet ﷺ, and it was revealed: 'It is not for the Prophet and those who believe to ask forgiveness for the polytheists'—until His saying—'[when it became clear to him that he was an enemy of God] he disassociated himself from him.' He said, "When he died."

Grades by grader

Narrators

1. 1
   ʿAlī b. Abū Ṭālib

   One of the ten (promised Paradise)d. 40 AH
   عَلِيُّ بْنُ أَبِي طَالِبٍأحد العشرة
   عن
2. 2
   Abū al-Khalīl

   acceptable (maqbūl)d. between 81 and 90 AH
   أَبِي الْخَلِيلِمقبول
   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
   Sufyān al-Thawrī

   trustworthy (thiqah), a memorizer (ḥāfiẓ), a jurist (faqīh), devout (ʿābid), an imam and authority (ḥujjah)d. 159 AH or 160 AH or 161 AH or 162 AH
   سُفْيَانُثقة حافظ , فقيه عابد ، إمام حجة
   حدثنا
5. 5
   Yaḥyá b. Ādam

   trustworthy (thiqah), a memorizer (ḥāfiẓ), virtuous (fāḍil)d. 203 AH
   يَحْيَى بْنُ آدَمَثقة حافظ فاضل
   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.