Amr bin Al-Aas (may Allah be pleased with him) narrates: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Indeed, every valley has a share in the human heart. Whoever lets his heart follow all its shares, Allah does not care about him, even if He destroys him in any valley. And whoever puts his trust in Allah, He suffices him from all shares." Its chain is weak, narrated by Ibn Majah.