Since Allah (swt) sees so, the issue does not need evidence. If the evidence is to come, then it will come on the Day of Resurrection voluntarily, as Allah (swt) says:

{ وَقَالُوا لِجُلُودِهِمْ لِمَ شَهِدْتُمْ عَلَيْنَا }

)And they will say to their skins, “Why have you testified against us?”) (Fussilat:21)

 {كَلَّا لَئِنْ لَمْ يَنْتَهِ لَنَسْفَعًا بِالنَّاصِيَةِ} 

 

)No! If he does not desist, We will surely drag him by the forelock – (15) (

كَلَّا (No!): Rebuke and scolding of what happened from Abu-Jahl who forbade and denied the Messenger (saws).

لنسفعًا بالناصية )We will surely drag him by the forelock): Meaning, we will grab him from the front of his head, this expresses insulting and humiliation to Abu-Jahl.