Musnad Ahmad — Hadith 24009/78

Wahb ibn Jarir narrated to us, my father narrated to us, I heard Yunus, from al-Hasan, from Amr ibn Taghlib, who said: The Messenger of Allah, peace and blessings be upon him, said: "Among the signs of the Hour is that wealth will overflow and become abundant, the pen will appear, and trade will become widespread." Amr said: A man would sell a sale and say, "Let me consult the merchant of such-and-such tribe," and in a large clan a scribe would be sought but not found.