Zayn al-Din Taybadi (d. 791/1389) is a captivating mystic of Mongol Iran. He was an irascible man, remembered by historians for his rudeness to Tamerlane (Temür; d. 807/1405). He in effect told Tamerlane (as New Yorkers like to say), to “take a long walk on a short pier.” This is the story.