Musnad Ahmad 3199

It was narrated that Ibn ‘Abbas (رضي الله عنه) said: Quraish said to the Prophet (ﷺ) "Pray to your Lord for us to turn Safa into gold for us, and if it is turned into gold we will follow you and will acknowledge what you have said as you said it. He asked his Lord, may He be glorified and exalted, and Jibreel came to him and said: If you wish, this Safa will be turned to gold for them, then whoever among them disbelieves after that, I will punish him with a punishment with which I have never punished anyone in the world before, or if you wish, we will open the gate of repentance to them. He said: O Lord, no; rather open to them the gate of repentance.