Hazrat Zir, may Allah have mercy on him, narrates that Hasan and Husain, may Allah be pleased with them both, used to play on the blessed back of the Messenger of Allah while he was performing prayer. When people tried to remove them, the Noble Prophet, peace and blessings be upon him and his family, said: Leave them alone. May my parents be sacrificed for them both. Whoever loves me should also love them both.