It’s unclear what passage of the Qur’an this charming lad has in mind. The Qur’an does say “Kill them wherever you find them” (2:191, 4:89, cf. 9:5), but those exhortations aren’t specifically directed at Jews.

Outside of the Qur’an, there is a famous hadith depicting Muhammad as saying that the end times will not come until Muslims kill Jews: “The last hour would not come unless the Muslims will fight against the Jews and the Muslims would kill them until the Jews would hide themselves behind a stone or a tree and a stone or a tree would say: Muslim, or the servant of Allah, there is a Jew behind me; come and kill him; but the tree Gharqad would not say, for it is the tree of the Jews.” (Sahih Muslim 6985)