It appears in one narration that the Quraish requested Rasulullah (sallallahu ‘alaihi wasallam) to transform the mountain of Safa into gold. On this occasion, Rasulullah (sallallahu ‘alaihi wasallam) intended to accept their request and make du‘aa to Allah Ta‘ala, but Hazrat Jibreel (‘alaihis salaam) appeared and said, “O Rasulullah (sallallahu ‘alaihi wasallam)! Inform them that they will get what they ask for, but they must understand that if they still fail to bring Imaan after witnessing these clear signs, it will not be good for them as they will be destroyed immediately.”
When Rasulullah (sallallahu ‘alaihi wasallam) conveyed this message to the Quraish, they retorted, “We are not in need of this.”
(Extracted from Seeratul Mustafa 1/193-194)