Were the Khuzaa' tribe, who formed an alliance with the Messenger, Muslims?

Question : I heard some, I mean, students of knowledge discussing the issue of the state of the Messenger (peace and blessings be upon him) with the Khuzaa', and so on. Yes. They said, "We do not accept the argument that they were disbelievers, based on the fact that when their speaker came to complain to the Prophet (peace and blessings be upon him), he said in his poem: 'They killed us while bowing and prostrating.' Yes. This is the correct view in this matter.

Answer : The first correct view, the correct one is that they were disbelievers, but they were a storehouse of advice for the Messenger (peace and blessings be upon him), and it is possible that a group among them, for example, killed [the Muslims] while bowing and prostrating; that is not a condition.