Musannaf Ibn Abi Shayba 13:2339

Abu Bakr narrated to us, he said: Mu'adh ibn Mu'adh narrated to us, from Ash'ath, from al-Hasan, regarding a man who hands a garment to a tailor and says, "I ordered you to make a *qurtaq* (a type of tunic)," and the tailor says, "You ordered me to make a *qamis* (shirt)." He said: It is the statement of the tailor.