It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said about a treasure that a man had found: "If you found it in an inhabited town or on a much-travelled road, then announce it. And if you found it in a ruin from the Jahiliyyah, or in an uninhabited town, or in a place that is not a thoroughfare, then in it and in rikaz (ancient treasure buried in the ground) one fifth (khumus) is due." In this book I have given many proofs for authenticating the narrations of Amr bin Shu'ayb when the one narrating from him is trustworthy (thiqah), and nothing better than these narrations is reported from him. I have been seeking clear proof that Shu'ayb bin Muhammad heard from Abdullah bin Amr, but I have not reached it up to this time.