Musnad Abu Ya'la al-Mawsili 110:106

Muhammad ibn Bakkar narrated to us, Khalid ibn Abdullah al-Wasiti narrated to us, from Yazid ibn Abi Ziyad, from Ikrimah, from Ibn Abbas, who said: The Messenger of Allah (may Allah bless him and grant him peace) cursed the effeminate men and the masculine women. I said: "And what are the masculine women?" He said: "The women who imitate men."