Musannaf Ibn Abi Shayba 2:200

Abu Bakr narrated to us, he said: Mu'tamir ibn Sulayman narrated to us, from his father, who said: We used to ask Anas, "Is there an Adhan and an Iqamah for women?" He said: "No. And if they do it, it is a Dhikr (remembrance of Allah)."