﴿ لَّٰكِنِ ٱللَّهُ يَشْهَدُ بِمَآ أَنزَلَ إِلَيْكَ ۖ أَنزَلَهُۥ بِعِلْمِهِۦ ۖ وَٱلْمَلَٰٓئِكَةُ يَشْهَدُونَ ۚ وَكَفَىٰ بِٱللَّهِ شَهِيدًا ﴾

“However it be, God [Himself] bears witness to the truth of what He has bestowed from on high upon thee: out of His own wisdom has He bestowed it from on high, with the angels bearing witness thereto - although none can bear witness as God does.”

When the Jews were asked about his Muhammad’s prophethood s and they denied him the following was revealed But God bears witness He makes clear the truth of your prophethood with what He has revealed to you of the miraculous Qur’ān; He has revealed it enveloped through His knowledge that is He has revealed it knowing it fully or He has revealed it with His knowledge therein; and the angels also bear witness to you; and God suffices as a Witness to this.