Silsilat al-Ahadith al-Sahihah

Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) came to us while Hasan and Husayn were with him, one on each shoulder. He would kiss one and then kiss the other, until he reached us. A man said to him: "Do you love them?" The Messenger of Allah (peace and blessings be upon him) replied: "Whoever loves them, loves me, and whoever bears enmity towards them, bears enmity towards me."