Musannaf Ibn Abi Shaybah 34359 — Reports on al-Hasan and al-Husayn

Yahya bin Abi Kathir (may Allah have mercy on him) said that the Prophet (peace and blessings be upon him) heard the sound of Sayyiduna al-Hasan (may Allah be pleased with him) or Sayyiduna al-Husayn (may Allah be pleased with him) crying, and he (peace and blessings be upon him) got up in alarm. Then he (peace and blessings be upon him) said: "Children are indeed a trial. I got up for him without even realising it."