Musnad Ahmad 1156:227

Waki’ narrated to us, Hisham and Ibn Numayr narrated to us, they said: Hisham ibn ‘Urwah narrated to us, from his father, from Zaynab bint Umm Salamah, from her mother, who said: A *mukhannath* (effeminate man) said to her brother, ‘Abdullah ibn Abi Umayyah: "If Allah grants you victory over Ta’if tomorrow, I will guide you to the daughter of Ghaylan, for she approaches with four [folds of skin] and departs with eight." The Prophet, peace and blessings of Allah be upon him, heard him and said: "Expel these people from your houses, and let them not enter upon you."