It is narrated from Sayyiduna Karz bin Alqamah that a man asked the Prophet (peace and blessings be upon him), "Is there any limit to Islam?" The Prophet (peace and blessings be upon him) replied: "Yes, when Allah intends good for any household among the Arabs and non-Arabs, He will admit them into Islam." The narrator asked, "Then what will happen?" The Prophet (peace and blessings be upon him) said: "After that, tribulations will spread like canopies." The questioner said, "By the will of Allah, this will never happen." The Prophet (peace and blessings be upon him) said: "Why not? By the One in Whose hand is my soul, then you will begin to strike each other's necks like black snakes."

The previous hadith is also narrated through this second chain of transmission.