Which were the two tribes that Shas bin Qays the Jew tried to instigate conflict between?

The dispute that almost erupted between the Aws and the Khazraj after their conversion to Islam was due to the intrigues and cunning of the Jews, particularly the act of Shas bin Qais, who was vexed by their unity and cohesion. He ordered a young man to remind them of the Day of Bu'ath and the pre-Islamic events that preceded it, which led to their quarreling and preparing for battle. The Prophet (peace be upon him) intervened and reminded them of the call of Jahiliyyah (ignorance) after they had been guided to Islam. So, they laid down their weapons and embraced one another. And Allah Almighty revealed verses concerning this, warning against the treachery of the People of the Book and their attempts to turn Muslims away from their religion.