Silsilat al-Ahadith al-Sahihah

Khalid bin Ma'dan says that Sayyiduna Miqdad bin Ma'dikarib and Sayyiduna Amr bin Aswad (may Allah be pleased with them) went to Sayyiduna Muawiyah (may Allah be pleased with him). Sayyiduna Muawiyah (may Allah be pleased with him) said to Sayyiduna Miqdad: "Do you know that Sayyiduna Hasan bin Ali (may Allah be pleased with them both) has passed away?" He «إِنَّا لِلَّـهِ وَإِنَّا إِلَيْهِ رَاجِعُونَ» said. Sayyiduna Muawiyah (may Allah be pleased with him) asked him: "Do you consider this news a trial?" He said: "Why should I not consider this incident a trial and test, when the Messenger of Allah (peace and blessings be upon him) seated Hasan in his lap and said: 'Hasan is from me and Husayn is from Ali.'"