Musannaf Ibn Abi Shayba 19:889

Abu Bakr narrated to us, he said: Waki’ narrated to us, from Abu Hilal, from al-Hasan and ‘Ikrimah, regarding a man who says to a man, "O effeminate one (mukhannath)." ‘Ikrimah said: "The prescribed punishment (hadd) is upon him." Al-Hasan said: "There is no prescribed punishment (hadd) upon him."