It is narrated from Hazrat Abu Umamah (may Allah be pleased with him) that the Holy Prophet (peace and blessings be upon him) said: The Beast of the Earth will emerge and it will mark people on their faces, and they will remain alive with that mark, to the extent that if a man buys a camel and someone asks him, "From whom did you buy this camel?" he will reply, "I bought it from the person whose face is marked."