Musannaf Ibn Abi Shayba 28:1127

Waki’ narrated to us, he said: Shu’bah narrated to us, from al-‘Awwam ibn Muzahim, from Khalid ibn Sayhan, he said: Four or five women witnessed [the battle of] Tustar with Abu Musa, among them was the mother of Mujza’ah ibn Thawr.