Abdullah bin Buraydah (may Allah have mercy on him) narrates from his father (Sayyiduna Buraydah, may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) was delivering a sermon. Meanwhile Sayyiduna al-Hasan and Sayyiduna al-Husayn (may Allah be pleased with them both) came, wearing red shirts; they would stumble and fall and then stand up again. When he (peace and blessings be upon him) saw them, he (peace and blessings be upon him) came down (from the pulpit), picked them both up, then climbed the pulpit and placed them both in his lap. Then he said: "Allah has spoken the truth: 'Indeed, your wealth and your children are a trial.' [Surah al-Taghabun: 15] I saw these two and could not restrain myself, so I picked them up."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الوقف / 11924