"Jewish violations of the Constitution of Medina, by aiding the enemies of the community, finally brought on major battles of Badr and Uhud[29] which resulted in Muslim victories and the exile of the Banu Qainuqa and Banu Nadir, two of the main three Jewish tribes from Medina, and the mass slaughtering of all male adults of Banu Qurayza."
https://en.wikipedia.org/wiki/Islamic%E2%80%93Jewish_relations
Muslims and Jews got along fine until Jews decided to give aid to the enemies of the Muslims
"a Muslim army invaded Iberia"
"Both Latin and Arabic chroniclers record that the Jews of the city “opened the gates of Toledo” to Tariq, who conquered the city. With more cities to take Tariq left Toledo and entrusted its protection to a garrison of Jewish soldiers"
https://www.judaism-islam.com/jews-opene-the-gates-of-toledo/
