Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: Quraysh went to the Jews and asked: What did Musa (peace be upon him) bring to you? They said: His staff, and his hand shining white for those who looked. Then they went to the Christians and asked: How was Isa (peace be upon him)? They said: He used to heal the one born blind and the leper, and bring the dead to life. So they came to the Prophet (peace and blessings be upon him) and said: Supplicate to your Lord to turn al-Safa into gold for us. He (peace and blessings be upon him) supplicated to his Lord, and this verse was revealed: "Indeed, in the creation of the heavens and the earth and the alternation of night and day there are signs for those of understanding" [Surah Al Imran: 190], so let them reflect upon it.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12270