Sayyiduna Kurz bin Alqamah al-Khuza'i (may Allah be pleased with him) said: I was sitting with the Messenger of Allah (peace and blessings be upon him) when a man from the Bedouins came and said: O Messenger of Allah, does Islam have an end point? The Messenger of Allah (peace and blessings be upon him) said: "Yes. Whether Arab or non-Arab, any household for which Allah wills good, He brings into Islam." The Bedouin said: Then what will happen, O Messenger of Allah? He (peace and blessings be upon him) said: "Then tribulations will occur like canopies (of cloud)." The Bedouin said: Certainly not, O Messenger of Allah! The Messenger of Allah (peace and blessings be upon him) said: "By the One in whose Hand is my soul, in them you will become like black serpents striking (at one another); some of you will strike the necks of others."
Hadith Referenceالمعجم الكبير للطبراني / باب الكاف / 16493