Sayyiduna Abdullah bin Amr bin al-As (may Allah be pleased with them both) said: I heard the Messenger of Allah (peace and blessings be upon him) when we set out from Ta'if; we passed by a grave, and he (peace and blessings be upon him) said: "This is the grave of so-and-so. He used to be protected by this sanctuary. When he left it, the calamity that had struck his people struck him at this very place, and he was buried in it. The sign of this is that his golden rod is buried with him; if you open his grave, you will find it with him." So the people hastened to it and took the rod out from there. And this grave was the grave of Abu Righal.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الزكاة / 7652