Musannaf Ibn Abi Shayba 38:74

Yahya ibn Adam narrated to us, he said: Abu Bakr narrated to me, from Jahsh ibn Ziyad al-Dabbi, he said: I heard al-Ahnaf ibn Qays saying: When Ali prevailed over the people of Basra, he sent to Aisha, "Return to Medina and to your house." He said: She refused. He said: So he sent the messenger to her again, "By Allah, you shall return, or I will send to you women from Bakr ibn Wa'il with sharp blades in their hands who will take you by them." When she saw that, she departed.