Quotation על גיטין 62:12

Raba and R. Nachman were both sitting when R. Nachman b. Jacob who, seated in a golden chariot covered with a green colored cloak, passed them by. Raba went to greet him, but R. Nachman did not; for he said: "R. Nachman must be one of the representatives of the Exhilarch. Raba might need him [for business purposes;] I, however, do not need him." R. Nachman b. Isaac noticed them, and he went to him. The former uncovered his arm, remarking: "The wind Shida is blowing."