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."
Hadith Referenceمسند احمد / مسند المكيين / 15919
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد حسن