Al-Matalib al-'Aliyah 4016 — The virtue of Hassan

It is narrated from Sa'id bin Jubayr (may Allah have mercy on him) that a man came to Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) and (speaking insolently of Sayyiduna Hassan bin Thabit (may Allah be pleased with him)) said: "That accursed Hassan has come." So Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) said (firmly rebutting him): "He is by no means accursed; he strove in jihad alongside the Messenger of Allah (peace and blessings be upon him) with his tongue and with his life."
Imam Abu Ya'la (may Allah have mercy on him) narrated this hadith in his Musnad, and its narrators are thiqat (trustworthy).