Sayyiduna Ka'b bin Ujrah (may Allah be pleased with him) said: the Messenger of Allah (peace and blessings be upon him) came to us while we were nine men, six of whom were non-Arabs, and he (peace and blessings be upon him) said: "Soon there will be rulers. Whoever affirms their lies, helps them in their oppression and carries out their schemes for them, he is not from me and I am not from him, and he will not come to the Pond."
Hadith Referenceالمعجم الكبير للطبراني / باب الكاف / 16394