It is narrated from Sayyiduna Sulayman bin Surad (may Allah be pleased with him) that he said: I came to Sayyiduna al-Hasan (may Allah be pleased with him) and said: "Present an apology on my behalf before the Commander of the Believers (Sayyiduna Ali, may Allah be pleased with him) that I could not be present at that battle." Sayyiduna al-Hasan (may Allah be pleased with him) said: "What will you do with this apology? I myself saw him clinging to me and saying: O Hasan! Would that I had died twenty years before this event."
This report is from the Musnad of al-Harith, and its narrators are thiqat (trustworthy).
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب الفتوح / 4406
Hadith Gradingمحدثین:إسناده صحيح
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :إسناده صحيح » «انفرد به المصنف من هذا الطريق»