Musannaf Ibn Abi Shayba 23:52

Yahya ibn Ya'la al-Taymi narrated to us, from Mansur, from Talq ibn Habib, from Anas ibn Malik, who said: "There are three things, whoever possesses them will find the taste and sweetness of faith: that Allah and His Messenger are more beloved to him than anything else besides them, and that he loves for the sake of Allah and hates for the sake of Allah." And he mentioned polytheism (shirk).