Alluded to by quoting the line about Jesus announcing 'a messenger named Ahmad' after him; it was used by the Muslim caller as support for Muhammad being foretold by Jesus.
Scripture spotlight
Quran 61:6
quran
6 And when Jesus son of Mary said, 'Children of Israel, I am indeed the Messenger of God to you, confirming the Torah that is before me, and giving good tidings of a Messenger who shall come after me, whose name shall be Ahmad.' Then, when he brought them the clear signs, they said, 'This is a manifest sorcery.'
Quoted to show the Quran claims Jesus foretold a messenger named Ahmad, then used to challenge Muslims to produce that statement from the Gospel text itself.
Quoted to claim that Jesus himself foretold a messenger named Ahmad after him; the hosts pressed for any manuscript or historical evidence that this saying existed in the Bible.
Central Quran verse repeatedly read aloud as the claim under test: that Jesus announced a later messenger named Ahmad. The host used it to challenge Muslims to produce an earlier source where Jesus actually says this.
Brought up in dispute over the Injil and Muhammad in prior scripture; the host said this verse predicts a messenger named Ahmad after Jesus and used it to challenge a Muslim's definition of the gospel.